title: Re: Bernstein et al: surveillance colonoscopy in ulcerative colitis.
authors.forename: B A
authors.initials: BA
authors.lastname: Lashner
authors.forename: J W
authors.initials: JW
authors.lastname: Singleton
mesh_terms: D003093:Colitis, Ulcerative / Q000175:diagnosis*; D003113:Colonoscopy; D006801:Humans; D011159:Population Surveillance