title: Aetiology of Crohn's disease.
authors.affiliation: Department of Paediatric Gastroenterology, St Bartholomews Hospital, London.
authors.forename: T T
authors.initials: TT
authors.lastname: MacDonald
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003106:Colon / Q000098:blood supply; D003424:Crohn Disease / Q000209:etiology* / Q000276:immunology / Q000382:microbiology; D006801:Humans; D006967:Hypersensitivity / Q000150:complications; D007238:Infarction / Q000150:complications; D016927:Mycobacterium avium subsp. paratuberculosis / Q000302:isolation & purification