Barahona-Garrido, J Cytomegalovirus infection in patients who required colectomy for toxic megacolon or severe steroid-refractory ulcerative colitis. [electronic resource] - Digestive diseases and sciences Mar 2010 - 867-8 p. digital Publication Type: Comment; Letter ISSN: 1573-2568 Standard No.: 10.1007/s10620-009-1109-5 doi Subjects--Topical Terms: ColectomyColitis, Ulcerative--complicationsCytomegalovirus Infections--complicationsDrug ResistanceHumansMegacolon, Toxic--complicationsSteroids--pharmacology