title: Has Crohn's disease really occurred anywhere in the digestive tract?
authors.forename: Xiaofa
authors.initials: X
authors.lastname: Qin
mesh_terms: D003424:Crohn Disease / Q000145:classification / Q000473:pathology*; D041981:Gastrointestinal Tract / Q000033:anatomy & histology* / Q000473:pathology*; D006801:Humans