title: The new endoscopy of ulcerative colitis.
authors.forename: R N
authors.initials: RN
authors.lastname: Baldassano
authors.forename: G R
authors.initials: GR
authors.lastname: Lichtenstein
mesh_terms: D003093:Colitis, Ulcerative / Q000473:pathology*; D003113:Colonoscopy / Q000379:methods*; D003952:Diagnostic Imaging; D006801:Humans