title: Colonoscopy and barium enemas.
mesh_terms: D001466:Barium Sulfate; D003106:Colon / Q000000981:diagnostic imaging*; D003108:Colonic Diseases / Q000175:diagnosis; D004724:Endoscopy; D004733:Enema; D006801:Humans; D011859:Radiography; D012812:Sigmoidoscopy
chemical_list: D001466:Barium Sulfate