Perforated duodenal ulcer in Reading from 1950 to 1959.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D004381:Duodenal Ulcer / Q000453:epidemiology / Q000601:surgery*; D004739:England; D005260:Female; D005500:Follow-Up Studies; D005743:Gastrectomy; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000453:epidemiology / Q000401:mortality / Q000601:surgery*; D011183:Postoperative Complications; D012737:Sex Factors