title: Investigation of rectal bleeding.
authors.forename: E
authors.initials: E
authors.lastname: Friedman
mesh_terms: D001466:Barium Sulfate; D003113:Colonoscopy; D004733:Enema; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D006801:Humans; D007902:Length of Stay; D012007:Rectum; D012812:Sigmoidoscopy
chemical_list: D001466:Barium Sulfate