title: Duodenal ulcers in Ibadan, Nigeria.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004380:Duodenal Obstruction / Q000150:complications; D004381:Duodenal Ulcer / Q000145:classification / Q000150:complications / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000209:etiology / Q000601:surgery; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000150:complications; D006801:Humans; D008297:Male; D008875:Middle Aged; D009549:Nigeria; D010439:Peptic Ulcer Perforation / Q000150:complications; D011859:Radiography; D012737:Sex Factors