DOI:
10.1055/s-00000013
Endoskopie heute
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References
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. The Inflammatory Bowel South-Eastern Norway (IBSEN) Study Group of Gastroenterologists.
Scand J Gastroenterol 1996; 31: 362-366
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