[Digestive hemorregeand gastrduodenal ulcers complicating the postoperative period in surgical interventions].
D006471:Gastrointestinal Hemorrhage; D006470:Hemorrhage; D006801:Humans; D010437:Peptic Ulcer; D011184:Postoperative Period; D013514:Surgical Procedures, Operative; D014456:Ulcer
HEMORRHAGE, GASTROINTESTINAL; PEPTIC ULCER; SURGERY, OPERATIVE