title: Defining ulcer depth in colitis.
authors.affiliation: St Mark's Hospital, Harrow, UK.
authors.forename: J E
authors.initials: JE
authors.lastname: Lennard-Jones
mesh_terms: D003093:Colitis, Ulcerative / Q000000981:diagnostic imaging / Q000473:pathology*; D003113:Colonoscopy; D006801:Humans; D011029:Pneumoradiography; D012680:Sensitivity and Specificity