PUBLICATIES: peer reviewed 1 Potters HVPJ, Loffeld RJLF, Stobberingh E, van Spreeuwel JP, Arends JW. Rapid staining of Campylobacter pyloridis. Histopathology 1987;11:1223. 2 Loffeld RJLF, Potters HVPJ, Arends JW, Stobberingh E, Flendrig JA, van Spreeuwel JP. Campylobacter associated gastritis in patients with non-ulcer dyspepsia. J Clin Pathol 1988;41:85-88. 3 Loffeld RJLF, Loffeld BCAJ, Arends JW, Flendrig JA, van Spreeuwel JP. Retrospective study of Campylobacter like organisms in patients undergoing partial gastrectomy. J Clin Pathol 1988;41:1313-15. 4 Loffeld RJLF, Loffeld BCAJ, Arends JW, Flendrig JA, van Spreeuwel JP. Fungal colonization of gastric ulcers. Am J Gastroenterol 1988;83:730-733. 5 Loffeld RJLF, Potters HVPJ, Arends JW, Stobberingh E, Flendrig JA, van Spreeuwel JP. Campylobacter associated gastritis in patients with non-ulcer dyspepsia: a double blind placebo controlled trial with colloidal bismuth subcitrate. Gut 1989;30:1202-12. 6 Loffeld RJLF, Flendrig JA, van Spreeuwel JP. Dyspepsia zonder ulcus ("non-ulcer dyspepsia") en met Campylobacter samenhangende gastritis. Ned Tijdschr Geneeskd 1989;133:1489-93. 7 Loffeld RJLF, Loffeld BCAJ, Arends JW. Campylobacter-like organisms in Meckel's diverticula? J Clin Pathol 1989;42:1111. 8 Loffeld RJLF, Stobberingh E, Flendrig JA, van Spreeuwel JP, Arends JW. Diagnostic value of an immunoassay to detect anti Campylobacter pylori antibodies in non-ulcer dyspepsia. Lancet 1989;i:1182-1185. 9 Loffeld RJLF, Stobberingh E, Arends JW. Detection of Campylobacter pylori infection. Lancet 1989;ii:569-570. 10 Loffeld RJLF, Stobberingh E, van Spreeuwel JP, Flendrig JA, Arends JW. The prevalence of anti Campylobacter pylori antibodies in patients and healthy blood donors. J Med Microbiol 1990;32:105-9. 11 Loffeld RJLF. Helicobacter pylori in gastroduodenal disease. Pharm Weekbl (Sci) 990;12(2):46-50. 12 Loffeld RJLF, Willems I, Flendrig JA, Arends JW. Helicobacter pylori in gastric carcinoma. Histopathology 1990;17:537-41. 13 Loffeld RJLF. Nieuwe inzichten in de pathogenese en de behandeling van het ulcus duodeni. Ned Tijdschr Geneeskd 1990;134:2170-3.
14 Loffeld RJLF, Flendrig JA. Pseudomembraneuze colitis bij gebruik van Norfloxacine. Ned Tijdschr Geneeskd 1990;134:83. 15 Loffeld RJLF, Soeters PB. Dunne darmperforatie als complicatie van een infectie met Salmonella typhimurium. Ned Tijdschr Geneeskd, 1990;134:1611-13. 16 Loffeld RJLF, Stobberingh E, Flendrig JA, Arends JW. Presence of Helicobacter pylori in patients with non-ulcer dyspepsia revealing normal antral histological characteristics. Digestion 1990;47:29-34. 17 Loffeld RJLF, Arends JW, Stobberingh E. Screening for Helicobacter pylori in dyspepsia. Lancet 1991;2:394. 18 Loffeld RJLF, Stobberingh E, Flendrig JA, Arends JW. Helicobacter pylori in gastric biopsy specimens. Comparison of culture, modified giemsa stain, and immunohistochemistry. A retrospective study. J of Pathol 1991;165:69-73. 19 Loffeld RJLF, Arends JW. Helicobacter pylori and gastric carcinoma. Histopathology 1991;19:389-90 Letter. 20 Loffeld RJLF. Advances in Etiology, Diagnosis and Treatment of Gastric disorders. Comprehensive Therapy 1991;17(4):7-14. 21 Van Den Oever HLA, Loffeld RJLF, Stobberingh E. Usefulness of a new serological test (Bio-rad) to diagnose Helicobacter pylori associated gastritis. J CLin Microbiol 1991;29:283286. 22 Loffeld RJLF, Peltenburg HG, van den Oever H, Stobberingh E. Prevalence of Helicobacter pylori antibodies in patients on chronic intermittent haemodialysis. Nephron 1991;59:250-253. 23 Loffeld RJLF, Stobberingh E. Helicobacter pylori and ABO blood groups. J Clin Pathol 1991;44:516-7. 24 Aalders GJ, Baeten CGMJ, Loffeld RJLF. Suturing angiodysplastic lesions of the small Intestine. Surg Obst Gynaecol 1991;173:323-4. 25 Loffeld RJLF. Primary biliary cirrhosis associated with recurrent angiodysplastic lesions in the gastrointestinal tract, the lupus anticoagulant and eosinophilic colitis. Neth J Med 1991;39:101-104. 26 Van Der Meer SB, Forget PP, Loffeld RJLF, Stobberingh E, Kuijten RH, Arends JW. Helicobacter pylori in children with recurrent abdominal pain. Eur J of Pediatrics 1992;151:799801. 27 Loffeld RJLF, Ten Tije BJ, Arends JW. The prevalence and significance of Helicobacter
pylori in patients with Barrett's oesophagus. Am J Gastroenterol 1992;87:1598-1600. 28 Loffeld RJLF. Angio-oedeem, een belangrijke maar weinig herkende bijwerking ? van "angiotensin converting enzyme"(ACE) remmers. Pharmaceutisch Weekblad 1992;41/42:11131115. 29 Loffeld RJLF, Stobberingh EE, Arends JW. Serum pepsinogens in blood transfusion donors. Gut 1992;33:1680. 30 Loffeld RJLF, Baeten CGMI, Aalders GJ. Recurrent massive gastrointestinal bleeding due to angiodysplasias in the small bowel. experience with panendoscopic diagnosis and treatment in six patients. Digestion 1992;51:60-64. 31 Loffeld RJLF, Stobberingh E, Arends JW. A review of diagnostic techniques for diagnosing Helicobacter pylori infection. Digestive Diseases 1993;11:173-180. 32 Loffeld RJLF, Arends JW. The role of Helicobacter pylori in non-ulcer dyspepsia and gastritis. Neth J of Medicine 1993;42:73-9. 33 Loffeld RJLF, Vriese WTJ, Stobberingh E. Usefulness of several commercial assays for detection of Helicobacter pylori infection in clinical medicine. Eur J Gastroenterol and Hepatol 1993;5:333-337. 34 Schipper CK, Rutten FFH, Loffeld RJLF. Kosten en effectiviteit van de diagnostiek en behandeling van patiënten met dyspepsie, bepaald met een computermodel. Ned Tijdschr Geneeskd 1993;137:1767-1771. 35 Loffeld RJLF, Arends JW, Stobberingh EE. Pitfalls in serological screening for Helicobacter pylori in dyspeptics. Eur J Gastroenterol and Hepatol 1993;5:295. 36 Loffeld RJLF, van Weel ThF. Tamoxifen for retroperitoneal fibrosis. Lancet 1993;341:382. 37 Loffeld RJLF. Treatment of duodenal ulcer disease. Eur J of Gastroenterol & Hepatol 1993;5:969-71. 38 Loffeld RJLF, Adang R. Bleeding and non-bleeding duodenal ulcers. A comparison regarding upper abdominal complaints, smoking habits and use of non steroidal antiinflammatory agents. J Clin Nutr and Gastroenterol 1993;4:123-6. 39 Loffeld RJLF, v/d Putten ABMM. Hiatal Hernia, Reflux-oesophagitis and Barrett's Oesophagus. A retrospective clinical and endoscopic study. Dis of the Esophagus 1993;6:57-61. 40 Loffeld RJLF, Balk AG. Intestinal metaplasia and Helicobacter pylori in patients with nonulcer dyspepsia: more arguments for the natural history. Eur J Gastroenterol & Hepatol 1994;6:907-910.
41 Loffeld RJLF, Appel A. Inspanningsgebonden stoornissen in de warmteregulatie bij 8 deelnemers aan de Dam-tot-Dam-loop 1993. Ned Tijdschr Geneeskd 1994;138:910-4. 42 Loffeld RJLF, v/d Putten ABMM. Ranitidine and recurrent hemorrhage from duodenal ulcer. New Eng J Med 1994;331:53-4. 43 Loffeld RJLF, Overtoom H, Rauwerda JA. The coeliac axis compression syndrome: report of five cases. Digestion 1995;56:534-537. 44 Loffeld RJLF. Rectal bleeding complicating radiofrequency-induced thermal destruction of the endometrium. Am J Obstet Gynecol 1995;172:1951. 45 Loffeld RJLF. Helicobacter pylori: a major contributor to duodenal ulcer disease. Russky Meditsinsky Journal 1995;1:22-26. 46 Loffeld RJLF, Werdmuller BFM. Nonulcer dyspepsia and Helicobacter pylori: Causal or coincidental. Arch Intern Med 1995;155:2253-2255. 47 Loffeld RJLF, v/d Putten ABMM, Balk A. Changes in the localisation of colonic cancer; implications for clinical practice ? J of Gastroenterol & Hepatol 1996;11:47-50. 48 Loffeld RJLF, Overtoom HAJM, Balk AT. Diffuse jejunoileitis with vasculitic abnormalities in the mesenteric arteries: a rare manifestation of Crohn's disease. Neth J of Med 1996;48:85-88. 49 Loffeld RJLF, Blaauboer J, Balk AG. Liverbiopsy because of HbsAg positive hepatitis revealing a nonsuspected hepatic Schistosomiasis. Implications for future therapy with recombinant interferon ? Acta Gastroenterológica Latinoamericana 1996;26:35-7. 50 Werdmuller B, van der Putten ABMM, Loffeld RJLF. The presentation of gastroesophageal reflux disease: a prospective clinical and endoscopic study. Dis of the Esophagus 1996;9:285-9. 51 Loffeld RJLF, v Bochove A, de Graaf J. Colonvarices: een zeldzame oorzaak van occult gastrointestinaal bloedverlies. Ned Tijdschr Geneeskd 1996;140:2467-9. 52 Loffeld RJLF. De infectie met Helicobacter pylori; het einde in zicht ? Ned Tijdschr Geneeskd 1996;140:2440-1. 53 Loffeld RJLF, Tjoa Tjing Kong, van der Hem KG, van der Putten ABMM. Doelmatig preoperatief onderzoek in de polikliniek anesthesiologie. Ned Tijdschr voor Geneeskd 1996;140:2102-4. 54 Loffeld RJLF. Incisor Teeth Status in patients with Reflux Oesophagitis. Digestion 1996;57:388-9. 55 van der Putten ABMM, Loffeld RJLF. Esophageal intramural pseudodiverticulosis. Dis of the Esophagus 1997;10:61-3.
56 BFM Werdmuller, Loffeld RJLF. Helicobacter pylori and reflux oesophagitis. Dig Dis Scie 1997;42:103-5. 57 Werdmuller B, van der Putten ABMM, Loffeld RJLF. The clinical presentation of peptic ulcer disease. Neth J of Med 1997;50:115-9. 58 Loffeld RJLF, Balk AG, Oomen JLT, van der Putten ABMM. Upper gastrointestinal bleeding due to a malignant Schwannoma of the stomach. Eur J of Gastroenterol & Hepatol 1998;10:159-62. 59 Loffeld RJLF, Van der Putten ABMM. Coincidental haemorrhoids: a retrospective endoscopic study. Techniques in Coloproctology 1998;2:36. 60 Loffeld RJLF, Balk AT. Subepithelial Collagen Thickening in the colon: Report on a series of 23 patients. Digestion 1998;59:715-8. 61 Loffeld RJLF. Functional dyspepsia in the young. Gut 1998;42:595. 62 Hackmann RJP, van der Putten ABMM, Loffeld RJLF. De opbrengst van endoscopische follow-up na het verwijderen van adenomateuze poliepen uit het colon. Ned Tijdschr Geneeskd 1998;142:1720-23. 63 Werdmuller BFM, van der Putten ABMM, Loffeld RJLF. Symptom clusters cannot be used in distinguishing Helicobacter pylori positive or negative patients with functional dyspepia. Neth J Med 1998;53:164-7. 64 Werdmuller BFM, van der Putten ABMM, Veenendaal RA, Lamers CBHW, Loffeld RJLF. Can screening for IgG antibodies against Helicobacter pylori be used in clinical practice ? Omit endoscopy in seropositive or seronegative patients ? Dig Dis Scie 1998;43:2296-2300. 65 Loffeld RJLF. Diagnostic value of endoscopic signs of gastritis: with special emphasis to nodular antritis. Neth J Med 1999;54:96-100. 66 Werdmuller BFM, van der Putten ABMM, Veenendaal RA, Lamers CBHW, Balk AG, Loffeld RJLF. Functional dyspepsia has a good prognosis irrespective of H.pylori status. Neth J Med 1999;55:64-70. 67 Loffeld RJLF. Eradicatie van Helicobacter pylori mogelijk gevolgd door gastro-oesofageale refluxziekte. Ned Tijdschr Geneeskd 1999;143:2505-7. 68 Filius PMG, Bosboom RW, Groeneveld PHP, Loffeld RJLF, Bezemer PD, van Loenen AC, Boom FA. Optimalisering van antibioticagebruik. Pharmaceutisch weekblad 2000;135:254-8. 69 Loffeld RJLF, Werdmuller BFM, Kusters JG, Kuipers EJ. IgG antibody titre against Helicobacter pylori correlates with presence of cytotoxin associated gene A-positive H.pylori
strains. FEMS Immunol Med Microbiol 2000;28:139-41. 70 Werdmuller BFM, van der Putten ABMM, Balk AG, Lamers CB, Loffeld RJLF. Clinical presentation of Helicobacter pylori-positive and -negative functional dyspepsia. J Gastroenterol Hepatol 2000;15:498-502. 71 Loffeld RJLF, Werdmuller BFM, Kuster JG, Perez-Perez GI, Blaser MJ, Kuipers EJ. Colonisation with cagA-positive Helicobacter pylori strains inversely associated with reflux esophagitis and Barrett's esophagus. Digestion 2000;62:95-99. 72 Loffeld RJLF. Helicobacter pylori en functionele dyspepsie. Onduidelijkheden rondom een infectie. Pharmaceutisch Weekblad 2000;135:1622-25. 73 Loffeld RJLF. Prevalence of upper abdominal complaints in patients who have undergone partial gastrectomy. Can J Gastroenterol 2000;14:681-4. 74 Boom HD, Loffeld RJLF. Long-term use of acid suppressive therapy after endoscopic diagnosis of reflux esophagitis. Dis Esophagus 2000;13:271-4. 75 Loffeld RJLF, Werdmuller BFM, Kusters JG, Kuipers EJ. Functional dyspepsia is associated with cagA-positive Helicobacter pylori strains. Scand J Gastroenterol 2001;36:351-5. 76 Loffeld RJLF. Reflux complaints, symptom score, and use of medication in patients with reflux esophagitis, results of a long-term follow-up study. Can J of Gastroenterology 2001;15:505-8. 77 Loffeld RJLF, van der Putten ABMM. The occurrence of duodenal or gastric ulcer in two different populations living in the same region: a cross-sectional endoscopicak study in consecutive patients. Neth J Med 2001;59:209-12. 78 Loffeld RJLF. Young patients with Barrett’s oesophagus experience less reflux complaints. Digestion 2001;64:151-4. 79 Loffeld RJLF. Neostygmine voor de behandeling van acute pseudo-obstructie van het colon (Ogilvie-syndroom). Ned Tijdschr Geneesk 2001;145:1034. 80 Twisk M, Kusters JG, Balk AG, Kuipers EJ, Loffeld RJLF. Colonisation density and topographic localisation of Helicobacter pylori do not depend on the cagA status. J Clin Pathol 2001;54:771-3. 81 Loffeld RJLF, van der Putten ABMM. Reflux oesophagitis and hiatal hernia as concomitant abnormality in patients presenting with active duodenal or gastric ulcer: a cross sectional endoscopical study in consecutive patients. Eur J Intern Med 2002;13:199-202. 82 Loffeld RJLF, van der Putten ABMM. Newly developing hiatus hernia: a survey in patients undergoing upper gastrointestinal endoscopy. J Gastroenterol & Hepatol 2002;17:542-4.
83 Loffeld RJLF, van der Putten ABMM. Diverticular disease of the colon and concomitant abnormalities in patients undergoing endoscopic evaluation of the large bowel. Colorectal Dis 2002;4:189-92. 84 Loffeld RJLF. Het zwevende rib syndroom: een veelal niet herkende oorzaak van pijnklachten. Ned Tijdschr Geneesk 2002;146:1813-5. 85 Loffeld RJLF, van der Putten ABMM. Newly developing diverticular disease of the colon in patients undergoing repeated endoscopic evaluation. J Clin Gastroenterology 2002;35:205-6. 86 Loffeld RJLF, van der Hulst RWM. H.pylori and gastroesophageal reflux disease; association and clinical implications. To treat or not to treat with anti-H.pylori therapy? Scand J Gastroenterol 2002;236:15-8. 87 Loffeld RJLF, van der Hulst RWM. H.pylori and functional dyspepsia. What to do after the Maastricht II consensus meeting? Scand J Gastroenterol 2002;236:19-21. 88 Loffeld RJLF, ABMM van der Putten. The yield of upper gastrointestinal endoscopy: a study of a ten-year period in the “Zaanstreek”. Neth J Med 2003;61:18-22. 89 Loffeld RJLF, Fijen CAPMJ. Antibiotic resistance of H.pylori: a cross-sectional study in consecutive patients, and relation to ethnicity. Clin Microbiol Infect 2003;9:600-4. 90 Loffeld RJLF. Helicobacter pylori eradication on Esophagitis and GERD. Am J Gastroenterol 2003;98:1201-2. 91 Loffeld RJLF De medicamenteuze behandeling van refluxziekte. FTO online, tijdschrift voor eerstelijns farmacotherapie 2003. www.fto.nl/info.asp?subject=gastroenterologie.refluxziekte. 92 Loffeld RJLF Obstipatie bij volwassenen. FTO online, tijdschrift voor eerstelijns farmacotherapie 2003. www.fto.nl/info.asp?subject=gastroenterologie.obstipatie. 93 Loffeld RJLF. H.pylori and reflux esophagitis in Turkish patients living in the Zaanstreek region in the Netherlands. Dig Dis Sci 2003;49:1846-49. 94 Loffeld RJLF. Medische noodzaak, geen leefstijl. Maagzuurremmers worden met reden voorgeschreven. Medisch Contact 2003;58:1487-90. 95 Loffeld RJLF, van der Putten ABMM. Changes in prevalence of Helicobacter pylori infection in two groups of patients undergoing endoscopy and living in the same region. Scan J Gastroenterol 2003;38:938-41. 96 Loffeld RJLF, van der Putten ABMM. Rising Incidence of Reflux Oesophagitis in Patients Undergoing Upper Gastrointestinal Endoscopy. Digestion 2003;68:141-144
97 de Jonge R, Pot RGJ, Loffeld RJLF, van Vliet AHM, Kuipers EJ, Kusters JG. The functional status of the Helicobacter pylori sabB adhesin gene as a putative marker for disease outcome. Helicobacter 2004;9:158-64. 98 Jongbloed MRM, Kanen BLJ, Visser M, Niessen H, Flens MJ, Loffeld RJLF. Unusual Sites of Metastatic Involvement: CASE 2. Intracardiac Metastasis From a Merkel Cell Carcinoma JCO Mar 15 2004: 1153-56. 100 Loffeld RJLF, ABMM van der Putten. Helicobacter pylori and gastro-oesophageal reflux disease: a cross-sectional epidemiological study. Neth J Med 2004;62:188-91. 101 Loffeld RJ, van der Putten AB. Prevalence of gastroesophageal reflux disease in immigrants living in the Zaanstreek region in the Netherlands. Dis Esophagus. 2004;17(1):87-90 102 de Jonge R, Kuipers EJ, Langeveld SJL, Loffeld RJLF, Stoof J, van Vliet AHM, Kusters JG. The Helicobacter pylori plasticity region locus jhp0947-jhp0949 is associated with duodenal ulcer disease and interleukin-12 production in monocyte cells. FEMS Immunol Med Microbiol 2004;41:161-7. 103 Loffeld RJLF. Approach to the patient with gastrointestinal bleeding and anticoagulation. Neth J Med 2005;63:39 (letter). 104 Loffeld RJLF, van der Putten ABMM. The annual yield of diagnostic endoscopy of the lower digestive tract. Eur J Int Med 2005;16:37-40. 105 De Wit NJ, van Barneveld TA, Festen HPM, Loffeld RJLF, van Pinxteren B, Numans ME. Richtlijn “Maagklachten” Ned Tijdschr Geneesk 2005;149:1386-92. 106 Loffeld RJLF. Diverticolosis of the colon is rare amongst immigrants living in the Zaanstreek region in the Netherlands. Colorectal Disease 2005;7:559-62. 107 Loffeld RJLF. Helicobacter pylori, obesity and gastro-oesophageal reflux disease. Is there a relation? A personal view. Neth J Med 2005;63:344-7. 108 Loffeld RJLF. Abcesvorming door verloren stenen bij laparoscopische cholecystectomie. Ned Tijdschr Geneeskd 2006;150:221 109 Loffeld RJLF. Reflux esophagitis in patients with partial gastrectomy and Billroth I or II reconstruction. Eur J Intern Med 2006;17:175-8. 110 Loffeld RJLF. Beleid bij diverticulitis: wel of geen antibiotica? Diverticulosis van het colon. In: Gastroenterologie voor de huisarts, Boerhave Commissie voor Postacademisch Onderwijs in de Geneeskunde Leids Universitair Medisch Centrum. Van Hoek B, Hoornweg J, Knuistingh Neven, Lamers, Veenendaal Editors;21-29. 111 De Graaf P, Slagt C, de Graaf JLCA, Loffeld RJLF. Fatal aspiration of polyethylene glycol
solution. Neth J Med 2006;64:196-8 112 Karimbeg AA, Loffeld RJLF. Multiple cysts in the liver autosomal dominant polycystic liver disease. Neth J Med 2006;64:199-201. 113 Loffeld RJ. Gastro-oesophageal reflux disease - experience in daily practice: Symptoms and symptom assessment. Scand J Gastroenterol 2006;suppl;243:3-6.. 114 Craanen ME, van Waesberghe JH, van der Peet DL, Loffeld RJ, Cuesta MA, Mulder CJ. Endoscopic ultrasound in patients with obstructive jaundice and inconclusive ultrasound and computer tomography findings.Eur J Gastroenterol Hepatol. 2006;18:1289-92. 115 Loffeld RJLF. The consequences of lost gallstones during laparoscopic cholecystectomy. Neth J Med 2006;64:364-6. 116 Hundscheid HWC, Pepels MJAE, Engels LGJB, Loffeld RJLF. Treatment of irritable bowel syndrome with osteopathy: Results of a randomized controlled pilot study. J Gastroenterology and Hepatology 2006. Published article online: 13-Nov-2006doi: 10.1111/j.1440-1746.2006.04741 117 Hundscheid HWC, Pepels MJAE, Engels LGJB, Loffeld RJLF. Treatment of irritable bowel syndrome with osteopathy: Results of a randomized controlled pilot study. J Gastroenterology and Hepatology 2007;22:1394-8. 118 Kanen BLJ, Loffeld RJLF. Hypertrophic osteoarthropathy as the cause of a super scan of the bone in a patient with prostate cancer: a case report Journal of Medical Case Reports 2008, 2:104 119 Loffeld RJLF. Hyperferritinaemia not always a sign of iron overload. Acta Gastroenterol Belg 2007;70:360-2. 120 Kanen B, Loffeld RJ. Pancreatitis with an unusual fatal complication following endoscopic retrograde cholangiopancreaticography: a case report. J Med Case Reports 2008;24:2:215. 121 Spanier BW, Mathus-Vliegen EM,Tuynman HA, van der Hulst RW, Dijkgraaf MG, Bruno MJ, van Bodegraven AA, Wesdorp IC, van Heukelem HA, Geraedts AA, Teunen A, Noach LA, Slot WB, de Groot GH, Loffeld RJ, Viergever PP, Klemt M, Oosting PR, Wagtmans MJ, Kingma PJ, Ponsioen CY. Nutritional management of patients with acute pancreatitis: a Dutch observational multicentre study. Aliment Pharmacol Ther 2008;28:1159-65. 122 Loffeld RJLF. Colorectal adenomas in patients presenting with inflammatory bowel disease. Neth J Med 2009;67:21-24. 123 Loffeld RJLF, van Bochove A. Screening op dikkedarmkanker. Ned Tijdschr Geneesk 2009;153:258-9.
124 RJLF Loffeld. Refluxziekte. In Refluxziekte handboek Dr RJLF Loffeld, Dr ME Numans EditorsAcademic Pharmaceutical Productions 2008 125 RJLF Loffeld. Klinische presentatie. In Refluxziekte handboek Dr RJLF Loffeld, Dr ME Numans EditorsAcademic Pharmaceutical Productions 2008 126 RJLF Loffeld. Atypische Refluxklachten (extra-oesofageale klachten). Refluxziekte. In Refluxziekte handboek Dr RJLF Loffeld, Dr ME Numans EditorsAcademic Pharmaceutical Productions 2008 127 RJLF Loffeld. Medicamenteuze behandeling van refluxziekte. In Refluxziekte handboek Dr RJLF Loffeld, Dr ME Numans EditorsAcademic Pharmaceutical Productions 2008 128 Jobse P, Flens MJ, Loffeld RJLF. Collagenous colitis: Description of a single centre series of 83 patients. Eur J Intern Med 2009;20:499-502 129 Wegman AI, Loffeld RJ.Gastroscopy in immigrants of Turkish descent J Gastroenterol Hepatol. 2009;24: 1187-90. 130 Loffeld RJ. Data selection flaw. Gut. 2009 Jun;58(6):887; author reply 887 131 Oort FA, Terhaar Sive Droste JS, Van der Hulst RW, VAN Heukelem HA, Loffeld RJ, Wesdorp IC, VAN Wanrooij RL, DE Baaij L, Mutsaers ER, VAN DER Reijt S, Coupe VM, Berkhof J, Bouman AA, Meijer GA, Mulder CJ. Colonoscopy controlled intraindividual comparisons to screen relevant neoplasia – fecal immunochemical test versus guaiac based fecal occult blood test. Aliment Pharmacol Ther 2009: oct 29 2009 132 Loffeld RJ, van der Putten AB. The completion rate of colonoscopy in normal daily practice: factors associated with failure. Digestion. 2009 Nov 13;80(4):267-270. [Epub ahead of print] 133 Koning MV, Loffeld RJLF. Rectal bleeding in patients with haemorrhoids. Coincidental findings in colon and rectum. Fam Pract. 2010 Mar 5. [Epub ahead of print] 134 Loffeld SMLA, Loffeld RJLF. Changing morbidity pattern in oesophagus, stomach and duodenum in Turkish patients: a time-trend analysis. Neth J Med 2010;68:280-4. 135 Koning MV, Loffeld RJ. A survey of abnormalities in the colon and rectum in patients with haemorrhoids. BMC Gastroenterol 2010;7:10(1): 74 [epub ahead of print]. 136 Neerincx M, Terhaar Sive Droste JS, Mulder CJ, Rakers M, Bartelsman JF, Loffeld RJ, Tuynman HA, Brohet RM, van der Hulst RW. Colonic work-up after incomplete colonoscopy: significant new findings during follow-up. Endoscopy 2010;42:730-5. 137 Terhaar sive Droste JS, Oort FA, van der Hulst RW, van Heukelem HA, Loffeld RJ, Ben Larbi I, Kanis SL, Neerincx M, Räkers M, Coupe VM, Meijer GA, Mulder CJ. Higher Fecal
Immunochemical test cut-off levels: lower positivity rates but still acceptable detection rates for early stage colorectal cancers. Cancer Epidemiology Biomarkers Prev 2010 dec epub ahead of print 138 Loffeld RJ, Engel A, Dekkers PE. Incidence and causes of colonoscopic perforations: a single-center case series. Endoscopy. 2011;43:240-2. 139 Terhaar sive Droste JS, Oort FA, van der Hulst RW, van Heukelem HA, Loffeld RJ, Ben Larbi I, Kanis SL, Neerincx M, Räkers M, Coupe VM, Meijer GA, Mulder CJ. Higher Fecal Immunochemical test cut-off levels: lower positivity rates but still acceptable detection rates for early stage colorectal cancers. Cancer Epidemiology Biomarkers Prev 2010 dec epub ahead of print, Cancer Epidemiol Biomarkers Prev. 2011 Mar;20(2):272-80. 140 Klaasen R, van den Born BJ, Loffeld RJ, Grandiek M, Gerlag DM, Hart W. Vasculitis associated with Churg-Strauss syndrome. Ned Tijdschr Geneeskd. 2011;155(6):A2170. Dutch. No abstract available. 141 Dackus MH, Loffeld SM, Loffeld RJ. The use of acid suppressive therapy more than 10 years after the endoscopic diagnosis of reflux oesophagitis: With specific emphasis to trademark and generic proton pump inhibitors. J Gastroenterol Hepatol. 2011 Jul 20. doi: 10.1111/j.14401746.2011.06855.x. [Epub ahead of print] 142 SMLA Loffeld, GMHE Dackus, RJLF Loffeld. The long-term follow-up of patients with endoscopically diagnosed reflux oesophagitis with specific emphasis to compliants. Eur J Gastroenterol 2011 J Gastroenterol Hepatol. 2011 Jul 20. doi: 10.1111/j.14401746.2011.06855.x. [Epub ahead of print] 143 Van der Sluis F, Loffeld RJ, Engel A. Outcome of surgery for colonoscopic perforation. Colorectal Dis. 2011 Sep 28. doi: 10.1111/j.1463-1318.2011.02841.x. [Epub ahead of print] 144 Loffeld RJLF, Liberov B, Dekkers PEP. Yearly diagnostic yield of colonoscopy in patients age 80 years or older, with a special interest in colorectal cancer. Geriatr Gerontol 2011, doi:10.1111/j.1447. 145 RJLF Loffeld, B Liberov, DEP Dekkers. The changing prevalence of upper gastrointestinal endoscopic diagnoses: a single-centre study. Neth J Med 2012;70:222-6. 146 van Turenhout ST, Oort FA, Terhaar Sive Droste JS, Coupé VM, van der Hulst RW, Loffeld RJ, Scholten P, Depla AC, Bouman AA, Meijer GA, Mulder CJ, van Rossum LG. Hemorrhoids detected at colonoscopy: an infrequent cause of false-positive fecal immunochemical test results. Gastrointest Endosc. 2012 Jul;76(1):136-43. 147 Terhaar Sive Droste JS, van Turenhout ST, Oort FA, van der Hulst RW, Steeman V, Coblijn U, van der Eem L, Duijkers R, Bouman AA, Meijer GA, Depla AC, Scholten P, Loffeld RJ,
Coupé VM, Mulder CJ. Faecal immunochemical test accuracy in patients referred for surveillance colonoscopy: a multi-centre cohort study. BMC Gastroenterol. 2012 Jul 24;12(1):94. 148 RJLF Loffeld, PEP Dekkers. Palliative stenting of the digestive tract: a case series of a single centre. J of gastrointestinal oncology 2012 149 RJLF Loffeld, B Liberov, PEP Dekkers. The yearly prevalence of findings in endoscopy of the lower part of the gastrointestinal tract. International Scholarly Research Network Gastroenterology 2012, vol 2012 Article ID 527634. doi: 10.5402/2012/527634. 150 RJLF Loffeld, PEP Dekkers. Palliative stenting of the digestive tract: a case series of a single centre. J Gastrointest Oncol 2013;4(1):14-9. doi: 10.3978/j.issn.2078-6891.2012.045 151 RJLF Loffeld, BFM Werdmuller. Changes in Antibiotic Susceptibility of Helicobacter pylori in the Course of Eight Years in the Zaanstreek Region in The Netherlands. Gastroenterology Research and Practice, vol. 2013, Article ID 625937, 5 pages, 2013. doi:10.1155/2013/625937. 152 Loffeld RJ, Dekkers PE. Experience with oesophageal cancer: a ten-year single centre study reflecting daily practice. ISRN Gastroenterol. 2013 Apr 24;2013:205417. doi: 10.1155/2013/205417. Print 2013. 153 Akdemir N, Loffeld RJ. Een vrouw met colocolische invaginatie. Ned Tijdschr Geneeskd. 2013;157(22):A6026. 154 Loffeld RJ, Dekkers PE, Flens M. The incidence of colorectal cancer is decreasing in the older age cohorts in the zaanstreek region in the Netherlands: an age-cohort effect. ISRN Gastroenterol. 2013 Jul 7;2013:871308. doi: 10.1155/2013/871308. Print 2013. 155 J. A. C. M. Burger, B. Liberov, F. Yurd, R. J. L. F. Loffeld. A Case of Extreme Gastroparesis due to an Occult Small Cell Cancer of the Lung. Case Reports in Gastrointestinal Medicine Volume 2013, Article ID 182962, 3 pages http://dx.doi.org/10.1155/2013/182962 156 Boonstra K, Weersma RK, van Erpecum KJ, Rauws EA, Spanier BW, Poen AC, van Nieuwkerk KM, Drenth JP, Witteman BJ, Tuynman HA, Naber AH, Kingma PJ, van Buuren HR, van Hoek B, Vleggaar FP, van Geloven N, Beuers U, Ponsioen CY; EpiPSCPBC Study Group. Collaborators (32)Abilakh Missier ET, Baak LC, van Bentem N, van den Brande JM, Brink MA, Bruins Slot W, Cahen DL, Claessen MM, Depla AC, de Groot G, van den Hazel SJ, Janse M, Klompmaker IJ, Korkmaz KS, Kuyvenhoven JP, Ledeboer M, Loffeld BC, Loffeld RJ, Mallant-Hent RC, Oosting PR, Riemens SC, Schmidt Böhmer J, Scholten P, Stadhouders PH, Tan G, Teunen A, Thijs JC, Verhagen MA, Viergever PP, Vrij AA, Weinhardt O, Witteman EM. Population-based epidemiology, malignancy risk, and outcome of primary sclerosing cholangitis. Hepatology. 2013 Dec;58(6):2045-55. doi: 10.1002/hep.26565. Epub 2013 Oct 17. 157 Loffeld RJ. Development of polyps and cancer in patients with a negative colonoscopy: a follow-up study of more than 20 years. ISRN Gastroenterol. 2014 Mar 4;2014:261302. doi: 10.1155/2014/261302. eCollection 2014.
158 RJLF Loffeld, B Liberov, PEP Dekkers. Caecal intubation rate in cases of colorectal cancer. Neth J Med 2014;12:338-9. 159 Abadia AT, Loffeld RJ, Constancia AC, Wagenaar JA, Kusters JG. Detection of the Helicobacter pylori dupA gene is strongly affected by the PCR design. Journal of Microbiological Methods 2014, doi:10:1016/j.mimet.2014.07.027. 160 Boonstra K1, Kunst AE, Stadhouders PH, Tuynman HA, Poen AC, van Nieuwkerk KM, Witteman EM, Hamann D, Witteman BJ, Beuers U, Ponsioen CY; Epi PSC PBC study group. Collaborators (35)Abilakh Missier ET, Baak LC, van Bentem N, van den Brande JM, Brink MA, Bruins Slot W, van Buuren HR, Cahen DL, Depla AC, Drenth JP, van Erpecum KJ, de Groot G, van den Hazel SJ, van Hoek B, Kingma PJ, Klompmaker IJ, Kuyvenhoven J, Ledeboer M, Loffeld BC, Loffeld RJ, Mallant-Hent RC, Naber AH, Oosting PR, Riemens SC, Schmidt Böhmer J, Scholten P, Spanier BW, Tan G, Teunen A, Thijs JC, Verhagen MA, Viergever PP, Vrij AA, Weersma RK, Weinhardt O. Rising incidence and prevalence of primary biliary cirrhosis: a large population-based study. Liver Int. 2014 Jul;34(6):e31-8. doi: 10.1111/liv.12434. Epub 2014 Jan 14. 161 R. J. L. F. Loffeld & B. Liberov & P. E. P. Dekkers Individual polyp detection rate in routine daily endoscopy practice depends on case-mix. Int J Colorectal Dis DOI 10.1007/s00384015-2181-2. 162 JAJ Douma, RJLF Loffeld. A “shocking” finish to the Dam tot Damloop event. Neth J Med 2015;73:179-81.
HOOFDSTUKKEN IN BOEKEN, artikelen op uitnodiging 1 Loffeld RJLF, Flendrig JA, van Spreeuwel JP, Arends JW. Subjective complaints, gastritis, and Campylobacter pylori in patients with non- ulcer dyspepsia. Excerpta Medica 1989, Elsevier Science Publishers. Gastroduodenal pathology and Campylobacter pylori. Ed: Megraud F, Lamouilatte H. :471-3. 2 Loffeld RJLF, Loffeld BCAJ, Arends JW, Flendrig JA, van Spreeuwel JP. The fate of Campylobacter pylori after partial gastrectomy. Has Campylobacter pylori still a role after surgery? A retrospective study. Excerpta Medica 1989, Elsevier Science Publishers. Gastroduodenal pathology and Campylobacter pylori. Ed: Megraud F, Lamouilatte H. :521-3. 3 Loffeld RJLF, Stobberingh E, Flendrig JA, Arends JW. Comparison of several methods of detecting Helicobacter (Campylobacter) pylori. In: Helicobacter pylori, gastritis and peptic ulcer Malfertheiner P, Ditschuneit H Ed. Springer Verlag Heidelberg, 1990; 333-48. 4 Loffeld RJLF, Willems I, Arends JW. A role for Helicobacter pylori in gastric carcinoma ? Helicobacter pylori and gastroduodenal pathology. Pajares JM, Pena AS, Malfertheiner P eds. Springer Verlag 1992;224-228
5 Loffeld RJLF, Adang R. Computerised history taking for the assessment of Helicobacter pylori in non-ulcer dyspepsia. The quest for the clinical syndrome. Helicobacter pylori and gastroduodenal pathology Pajares JM, Pena AS, Malfertheiner P eds. Springer Verlag 1992;201206. 6 Loffeld RJLF, van den Oever HLA, Stobberingh E. The usefullness of two elisa systems for the diagnosis of Helicobacter pylori associated gastritis. Helicobacter pylori and gastroduodenal pathology. Pajares JM, Pena AS, Malfertheiner P eds. Springer Verlag 1992;211-218. 7 Van Der Meer SB, Forget PP, Loffeld RJLF, Stobberingh E, Kuijten RH, Arends JW. The prevalence of Helicobacter pylori serum antibodies in recurrent abdominal pain. Chapter 6, Thesis SB van der Meer, Maastricht 1991. 8 Loffeld RJLF. The management and treatment of dyspepsia and Helicobacter pylori gastritis. In: Helicobacter pylori: biology and clinical practice Goodwin CS, Worsley BW eds. CRC Press 1993. 9 Loffeld RJLF. Helicobacter pylori. In Gastroenterologie Diagnostic Teaching Day 1996. Eds: Assmann PEM, Cluysenaer OJJ, Otten MH. 10 Loffeld RJLF, Flendrig JA, Stobberingh E. Campylobacter pylori en de maag. Analyse Tijdschr voor medisch analisten 1988;11:279-282. 11 Loffeld RJLF. Contrastnefropathie bij preexistente nierziekten Ned Tijdschr Geneeskd 1989;133:2141. 12 Loffeld RJLF. De Campylobacter geassocieerde gastritis. Informatie bulletin diagnostisch centrum. 1986;8:12-16. 13 Loffeld RJLF. Helicobacter pylori. Uitgave Gist-Brocades: GB-intermedicus 1990. 14 Loffeld RJLF. Niet-ulcereuze dyspepsie en met Campylobacter samenhangende gastritis. Modern Medicine 1990: februari special Gastroenterologie. 15 Loffeld RJLF. Non-ulcer dyspepsia and Helicobacter pylori. Insights into Helicobacter pylori and peptic disorders 1991;12. 16 Loffeld RJLF. Beschadiging van het maag-darmkanaal door niet steroïde anti-inflammatoire geneesmiddelen (NSAID's). A tot A Farmaceutisch bulletin Zaanstreek Waterland 1993;Juli:1213. 17 Loffeld RJLF. Proton pump inhibition: efficacy, safety, eradication. Highlights of Satellite symposium. 5TH United European Gastroenterology Week November 2-6 1996. 18 Loffeld RJLF. H.pylori serology in general practice. Dear Colleague, Care and Cure 1999:3.
19 Loffeld R, Cuesta M, Engel A. Gecompliceerde divertikelziekte van het colon. Verslag van een symposium. Magma 2001;1:16 20 Loffeld RJLF. Helicobacter pylori: een overzicht. Medische knipselkrant, Themanummer Omeprazol. Exerpta Medica Publishers 2002;7 21 Loffeld RJLF. Buikpijn. denk eens aan het zwevende-ribsyndroom. Gezondheidsnieuws 2004 nummer 3. 22 Loffeld RJLF, Arends JW. Microbiële infecties in de maag. Modern Medicine 1992;1:29-32. 23 Loffeld RJLF. Pancreatitis acuta. Veranderde inzichten in de etiologie en behandeling. Modern Medicine 1994;12:871-875. 24 Loffeld RJLF. De diagnostiek van de infectie met Helicobacter pylori. Modern Medicine 1994;18:486-489. 25 Appel AAM, Loffeld RJLF. De pathofysiologie en het klinisch beeld van stoornissen in de warmteregulatie. Modern Medicine 1995;7/8:483-486. 26 Loffeld RJLF. Ischemische syndromen van het mesenteriale vaatbed Modern Medicine 1995;9:548-551. 27 Loffeld RJLF, Werdmuller BFM. Helicobacter pylori: de betekenis voor de dagelijkse praktijk. Modern Medicine 1996;1:22-25. 28 Loffeld RJLF. Wat is de prevalentie en incidentie van de Helicobacter pylori in Nederland ? Vademecum permanente nascholing huisartsen 1998;15:2a. 29 Loffeld RJLF. Helicobacter pylori, een doorbraak in de gastro-enterologie. Dossier Gereontologie 1998;1:55-9. 30 Loffeld RJLF. Hoe lang blijven de antistoffen tegen Helicobacter pylori in het serum aantoonbaar na een succesvolle behandeling van de infectie? Vademecum permanente nascholing huisartsen 1999;17:132a en Internisten Vademecum 1999;19. 31 Loffeld RJLF. Is een positieve urease test bewijzend voor de aanwezigheid van Helicobacter pylori. Vademecum Permanente Nascholing Huisartsen 1999;17:52a 32 Loffeld RJLF. Is zuurremming met zowel protonpompremmers als H2-receptorblokkers zinvol? Internisten vademecum 2000:12. 33 Loffeld RJLF. H.pylori-positieve functionele dyspepsie; behandelen of niet? Gastroaktueel 2000:3 34 Loffeld RJLF. De samenhang van Helicobacter pylori met gastro-oesofageale refluxziekte:
klinische betekenis? Modern Medicine 2001;25:666-9 35 Loffeld RJLF. Een “coeliacus bandje’. Een relatief onbekend compressiesyndroom van de truncus coeliacus en/of de arteria mesenterica superior. Gastroaktueel 2001;5:3 36 Van der Hulst RWM, Loffeld RJLF. H.pylori en functionele dyspepsie. Modern Medicine 2002;26:114-8. 37 Loffeld RJLF. Behandeling van infectie met H.pylori. Gastroaktueel 2002;6:1 38 Loffeld RJLF. Diverticulosis van het colon. Formularium Gastroenterologicum. In press. 39 Loffeld RJLF. Gastro-intestinale bijwerkingen van NSAID-gebruik. Gastroaktueel 2002;6:5 40 Loffeld RJLF. Vergt een diverticulosis van het colon een follow-up onderzoek? Vademecum permanente nascholing huisartsen 2002;20:45a. 41 Loffeld RJLF. Gebruik van NSAID’s en gastro-intestinale bijwerkingen. Modern Medicine 002;11:659-62. 42 Loffeld RJLF. Gastro-intestinale problematiek bij patiënten met de ziekte van Parkinson. Capita selecta ziekte van Parkinson, Hovestadt A. Editor, 2003:6:1-8. 43 Loffeld RJLF. Nachtelijke gastro-oesofageale reflux, epidemiologie, pathofysiologie en behandeling. Gastroactueel 2003;7:1. 44 Loffeld RJLF. Kan een hernia diafragmatica zich als acuut ziektebeeld presenteren met pijnklachten boven in de buik of de thorax? Vademecum permanente nascholing huisartsen 2003;21:18. 45 Loffeld RJLF. Wat is het beleid bij een, bij toeval, ontdekte poliep in de galblaas? Internisten Vademecum 2003;8:nummer 9. 46 Loffeld RJLF. Wat is het beleid bij een, bij toeval, ontdekte poliep in de galblaas? Vademecum permanente nascholing huisartsen. Interne ziekten. 2003;21:nummer 22a. 47 Loffeld RJLF. Zuurremmers bij ulcuslijden en refluxziekte: hoe terecht zijn de overheidsplannen? Modern Medicine 2004;28:37-41. 48 Loffeld RJLF, de Groot GH. Refluxziekte en overgewicht. Gastro actueel 2004;8:1. 49 Loffeld RJLF. Substitutie van specialite maagzuurremmer door generiek? Magma 2004;1:17-8. 50 Loffeld RJLF. Maagzuurproductie en protonpompremmers. Gastro actueel 2004;8:2
51 Loffeld RJLF. Nachtelijk zuurbranden: frequent voorkomende, maar weinig herkende complicatie van refluxziekte. Modern Medicine 2004;4:218-21. 52 Loffeld RJLF. Pijnbestrijding en preventie van maagschade. Modern Medicine 2004;5A:236. 53 Loffeld RJLF. Refluxziekte in de dagelijkse praktijk Gastro Actueel 2004:8 54 Loffeld RJLF. Is er in de diagnostiek van coloncarcinoom nog plaats voor X-colon? Oncologie Vademecum 2004;5:28 55 Loffeld RJLF. Generiek omeprazol vaak inferieur aan specialité. Pharmaceutisch weekblad 2004;49::1634-7. 56 Loffeld RJLF. Maagresectie en gastro-oesofageale refluxziekte. Gastro Actueel 2004:11 57 Mulder CJ, Loffeld RJLF. Generiek omeprazol. Gastro Actueel 2005:2. 58 Loffeld RJLF. Eradicatietherapie maakt beloften niet waar. Ingezonden brief Pharmaceutisch weekblad 2005;18:585. 59 Loffeld RJLF. NSAID-gebruik ter pijnbestrijding en preventie van maagschade: traditionele NSAID’s of toch COX-2-remmers? Modern Medicine 2005;5A:24-7. 60 Loffeld RJLF. Problemen met defecatie bij ziekte van Parkinson. Meer dan alleen het voorschrijven van laxantia. Modern Medicine 2005;8:410-3. 61 Loffeld RJLF. Gastro-enterologie en endotherapie. Gastro Actueel 2005: 6 62 Loffeld RJLF. Is er in de diagnostiek van coloncarcinoom nog plaats voor X-colon? Oncologie Vademecum 2005:10 63 Loffeld RJLF. Zuurremming in het algemeen; intraveneuze zuurremming in het bijzonder. Gastro Actueel 2005;9. 64 Brendeke J, Hoogcarspel E, Koens van de put AMHC, Timmer RAC, Walpot RJ, Loffeld RJLF. Obstipatie in de huisartpraktijk. Modern Medicine 2006;2:89-3. 65 Loffeld RJLF. Het voorkomen van refluxziekte bij overgewicht en obesitas. Modern Medicine 2006;3:117-20. 66 Loffeld RJLF. Gebruik van NSAID’s bij ulcuslijden. ClinicalSeries Celebrex 2006;1 67 Loffeld RJLF. Hoe groot is de kans op het ontwikkelen van Barrett-epitheel bij chronische refluxziekte? Gastro Actueel 2006;3.
68 Loffeld RJLF. Neemt Barrett epitheel af of verdwijnt het na onderhoudsbehandeling van refluxziekte? Gastro Actueel 2006;5. 69 Loffeld RJLF. Gastro-enterologie en endotherapie. De 24e Europese Workshop. Gastro Actueel 2006;11. 70 Loffeld RJLF. Is er in de diagnostiek van coloncarcinoom nog plaats voor x-colon? Internisten vademecum 2006;11:14. 71 Stradmeijer MD, Loffeld RJLF. De hik: een vervelend maar onschuldig fenomeen? Modern Medicine 2007;7/8:322-4. 72 Loffeld RJLF. Gastroesofageale refluxziekte. Patient Care 2007;35:21-4. 73 RJLF Loffeld, TK Klooker, G Boeckstaens, H Grundmeier. Obstipatie en het prikkelbaardarmsyndroom. Modern Medicine 2009;7/8:231-5. 74 Loffeld RJLF. Wat is de opbrengst van oesofagogastroduodenoscopie na eerdere endoscopie zonder afwijkingen? Modern Medicine 2009;10:322-25. 75 RJLF Loffeld. Opbrengst van coloscopie bij patienten met rectaal bloedverlies of ijzergebreksanemie. Modern Medicine 2010:11;353-7. 76 RJLF Loffeld. Opbrengst van coloscopie bij patienten met rectaal bloedverlies of ijzergebreksanemie. Modern Medicine 2010:11;353-7. 77 RJLF Loffeld. Geen afwijkingen bij eerste endoscopisch onderzoek colon? Tweede endoscopisch onderzoek vaak overbodig. Modern Medicine 2011;9:283-7. 78 RJLF Loffeld, B Liberov, PEP Dekkers. Opbrengst coloscopie rechtstreeks aangevraagd door de huisarts. Modern Medicine 2012;3:83-6
