The value of colonoscopy in clinical practice.
D003093:Colitis, Ulcerative / Q000175:diagnosis; D003108:Colonic Diseases / Q000175:diagnosis*; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D006391:Hemangioma / Q000175:diagnosis; D006801:Humans; D007414:Intestinal Neoplasms / Q000175:diagnosis; D007417:Intestinal Polyps / Q000175:diagnosis; D012812:Sigmoidoscopy / Q000379:methods