title: Management of severe steroid-refractory ulcerative colitis: cyclosporine or infliximab?
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, MN, USA.
authors.forename: Siddharth
authors.initials: S
authors.lastname: Singh
authors.forename: Edward V
authors.initials: EV
authors.lastname: Loftus