Els van de Vijver

35 REFERENCES 1. van Rheenen PF, Van de Vijver E, Fidler V. Faecal calprotectin for screening of patients with suspected inflammatory bowel disease: diagnostic meta-analysis. BMJ 2010;341:c3369. 2. Fagerberg UL, Loof L, Merzoug RD, et al. Fecal calprotectin levels in healthy children studied with an improved assay. J Pediatr Gastroenterol Nutr 2003;37:468-472. 3. Rugtveit J, Fagerhol MK. Age-dependent variations in fecal calprotectin concentrations in children. J Pediatr Gastroenterol Nutr 2002;34:323-324. 4. Inflammatory bowel disease in children and adolescents: recommendations for diagnosis- the Porto criteria. J Pediatr Gastroenterol Nutr 2005;41:1-7. 5. Diamanti A, Panetta F, Basso MS, et al. Diagnostic work-up of inflammatory bowel disease in children: The role of calprotectin assay. Inflamm Bowel Dis 2010;16:1926-1930. 6. Henderson P, Casey A, Lawrence SJ, et al. The Diagnostic Accuracy of Fecal Calprotectin During the Investigation of Suspected Pediatric Inflammatory Bowel Disease. Am J Gastroenterol 2012 Feb 28. 7. Knottnerus JA, Dinant GJ. Medicine based evidence, a prerequisite for evidence based medicine. BMJ 1997;315:1109-1110. 8. Bremner A, Roked S, Robinson R, et al. Faecal calprotectin in children with chronic gastrointestinal symptoms. Acta Paediatr 2005;94:1855-1858. 9. Dolwani S, Metzner M, Wassell JJ, et al. Diagnostic accuracy of faecal calprotectin estimation in prediction of abnormal small bowel radiology. Aliment Pharmacol Ther 2004;20:615-621. 10. Tibble JA, Sigthorsson G, Foster R, et al. High prevalence of NSAID enteropathy as shown by a simple faecal test. Gut 1999;45:362-366. 11. Poullis A, Foster R, Mendall MA, et al. Proton pump inhibitors are associated with elevation of faecal calprotectin and may affect specificity. Eur J Gastroenterol Hepatol 2003;15:573-574. 12. Shulman RJ, Eakin MN, Czyzewski DI, et al. Increased gastrointestinal permeability and gut inflammation in children with functional abdominal pain and irritable bowel syndrome. J Pediatr 2008;153:646-650. 13. Pewsner D, Battaglia M, Minder C, et al. Ruling a diagnosis in or out with "SpPIn" and "SnNOut": a note of caution. BMJ 2004;329:209-213. 14. Tsampalieros A, Griffiths AM, Barrowman N, et al. Use of C-reactive protein in children with newly diagnosed inflammatory bowel disease. J Pediatr 2011;159:340-342. 15. Iron deficiency anaemia: assessment, prevention, and control. A guide for programme managers. Geneva, World Health Organization, 2001(WHO/NHD/01.3). p 33 ( table 6) Ruling out IBD without referral for endoscopy

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