Perforated gastroduodenal ulcer disease at the Massachusetts General Hospital from 1952 to 1970.
D001900:Boston; D005260:Female; D005500:Follow-Up Studies; D006769:Hospitals, General; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000175:diagnosis / Q000401:mortality / Q000601:surgery*; D012189:Retrospective Studies; D013997:Time Factors