The role of surgery in haematemesis and melaena.
D006396:Hematemesis / Q000601:surgery*; D006801:Humans; D008551:Melena / Q000601:surgery*; D010437:Peptic Ulcer; D010438:Peptic Ulcer Hemorrhage
HEMATEMESIS/surgery; MELENA/surgery; PEPTIC ULCER/hemorrhage