title: On making the diagnosis of ulcerative colitis.
authors.forename: C N
authors.initials: CN
authors.lastname: Bernstein
mesh_terms: D003093:Colitis, Ulcerative / Q000175:diagnosis*; D003106:Colon / Q000473:pathology; D003424:Crohn Disease / Q000175:diagnosis; D003937:Diagnosis, Differential; D006801:Humans; D012007:Rectum / Q000473:pathology