[Perforation of gastric and duodenal ulcers manifested as acute abdomen].
D000006:Abdomen, Acute / Q000209:etiology*; D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D006801:Humans; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000601:surgery