Bleeding gastroduodenal ulcers: selection of patients for surgery.
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004381:Duodenal Ulcer / Q000601:surgery*; D004724:Endoscopy; D006801:Humans; D008875:Middle Aged; D010438:Peptic Ulcer Hemorrhage / Q000601:surgery*; D011379:Prognosis; D013276:Stomach Ulcer / Q000601:surgery*