. Silverberg MS, Satsangi J, Ahmad T et al. Toward an integrated clinical, molecular and serological classification of inflammatory bowel disease: report of a working party of the 2005 Montreal World Congress of Gastroenterology. Can J Gastroenterol 2005; 19 (Suppl. A): 5–36.
2. Goldblum JK, Petras RE. Histopathology of Crohn's disease. In: Allan RN, Rhodes JM, Hanauer SB et al, eds. Histopathology of Crohn's disease, 3rd ed. New York: Churchill-Livingstone, 1997; 311–5.
3. Schumacher G, Kollberg B, Sandstedt B et al. A prospective study of first attacks of inflammatory bowel disease and non-relapsing colitis: microbiologic findings. Scand J Gastroenterol 1993; 28: 1077–85.
4. Chutkan R, Waye J. Endoscopy in inflammatory bowel disease. In: Kirsner JB, ed. Inflammatory bowel disease. 5th ed. Philadelphia: WB Saunders, 2000; 453–77.
5. Pera A, Bellando P, Caldera D et al. Colonoscopy in inflammatory bowel disease: diagnostic accuracy and proposal of an endoscopic score. Gastroenterology 1987; 92: 181–5.
6. Bentley E, Jenkins D, Campbell F et al. How could pathologists improve the initial diagnosis of colitis? Evidence from an international workshop. J Clin Pathol 2002; 55: 955–60.
7. Meuwissen SG, Pape KS, Agenant D et al. Crohn's disease of the colon: analysis of the diagnostic value of radiology, endoscopy, and histology. Am J Dig Dis 1976; 21: 81–8.
8. Morson BC. Colitis unclassified. Morson BC, Dawson IMP (eds.). Gastrointestinal pathology. Oxford: Blackwell, 1974; 485–6.
9. Kent TH, Ammon RK, DenBesten L. Differentiation of ulcerative colitis and regional enteritis. Arch Pathol 1970; 89: 20–9.
10. Price A. Overlap in the spectrum of non-specific inflammatory bowel disease: "colitis indeterminate". J Clin Pathol 1978; 31: 567–77.
11. Wells AD, McMillan I, Price AB et al. Natural history of indeterminate colitis. Br J Surg 1991; 78: 179–81.
12. Lee KS, Medline A, Shockey S. Indeterminate colitis in the spectrum of inflammatory bowel disease. Arch Pathol Lab Med 1979; 103: 173–6.
13. Farmer M, Petras R, Hunet LE et al. The importance of diagnostic accuracy in colonic inflammatory bowel disease. Am J Gastroenterol 2000; 95: 3184–8.
14. Rudolph WG, Uthoff SMS, McAuliffe TL et al. Indeterminate colitis: the real story. Dis Colon Rectum 2002; 45: 1528–34.
15. Warren BF, Shepherd NA. What are the controversies in histopathologic diagnosis? Jewell DP, Warren BF, Mortensen NJ (eds.). Challenges in inflammatory bowel disease. Oxford: Blackwell Science, 2001; 69–84.
16. Odze R. Diagnostic problems and advances in inflammatory bowel disease. Mod Pathol 2003; 16: 347–58.
17. Ekbom A. Indeterminate IBD: the magnitude of the problem. Inflamm Bowel Dis 2000; 6: S14–5.
18. Domizio P. Pathology of chronic inflammatory bowel disease in children. Baillieres Clin Gastroenterol 1994; 8: 35–63.
19. Geboes K. Crohn's disease, ulcerative colitis or indeterminate colitis: how important is it to differentiate? Acta Gastroenterol Belg 2001; 64: 197–200.
20. Moum B, Vatn MH, Ekbom A et al. Incidence of ulcerative colitis and indeterminate colitis in four counties of southeastern Norway, 1990–93-a prospective population-based study. Scand J Gastroenterol 1996; 31: 362–6.
21. Meucci G, Bortoli A, Riccioli FA et al. Frequency and clinical evolution of indeterminate colitis: a retrospective multi-centre study in northern Italy. GSMII (Gruppo di Studio per le Malattie Infiammatorie Intestinali). Eur J Gastroenterol Hepatol 1999; 11: 909–13.
22. Satsangi J, Silverberg MS, Vermeire S, Colombel JF. The Montreal classification of inflammatory bowel disease: controversies, consensus and implications. Gut 2006; 55: 749–53.
23. Price AB. Overlap in the spectrum of non-specific inflammatory bowel disease – "colitis indeterminate". J Clin Pathol 1978; 31: 567–77.
24. Silverberg MS, Satsangi J, Ahmad T et al. Toward an integrated clinical, molecular and serological classification of inflammatory bowel disease: report of a working party of the 2005 Montreal World Congress of Gastroenterology. Can J Gastroenterol 2005; 19 (Suppl. A): 5–36.
25. Joossens S, Reinisch W, Vermeire S et al. The value of serologic markers in indeterminate colitis: a prospective follow-up study. Gastroenterology 2002; 122: 1242–7.