The after history of patients with perforated duodenal ulcer.
D000293:Adolescent; D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000601:surgery* / Q000628:therapy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000601:surgery* / Q000628:therapy