title: The natural history of duodenal ulcer disease.
mesh_terms: D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000150:complications / Q000175:diagnosis / Q000453:epidemiology; D004739:England; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010438:Peptic Ulcer Hemorrhage; D010439:Peptic Ulcer Perforation; D011707:Pyloric Stenosis / Q000209:etiology; D014481:United States