title: Medical therapy of ulcerative proctitis and proctosigmoiditis, including refractory disease.
authors.affiliation: Center for Inflammatory Bowel Disease, Beth Israel Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A.
authors.forename: A
authors.initials: A
authors.lastname: Bitton
authors.forename: M A
authors.initials: MA
authors.lastname: Peppercorn