Gastric ulcer in tropical Africa. Clinical features and incidence in Burundi.
D000349:Africa; D004381:Duodenal Ulcer / Q000145:classification; D005260:Female; D006801:Humans; D008297:Male; D009549:Nigeria; D010437:Peptic Ulcer / Q000453:epidemiology; D010438:Peptic Ulcer Hemorrhage / Q000453:epidemiology; D010439:Peptic Ulcer Perforation / Q000453:epidemiology; D012744:Sex Ratio; D012959:Socioeconomic Factors; D013276:Stomach Ulcer / Q000145:classification / Q000150:complications / Q000453:epidemiology* / Q000601:surgery