[Crohn's disease in siblings].
D000293:Adolescent; D003092:Colitis / Q000235:genetics / Q000473:pathology; D003424:Crohn Disease / Q000235:genetics* / Q000473:pathology; D006801:Humans; D007079:Ileitis / Q000235:genetics / Q000473:pathology; D008297:Male; D010375:Pedigree