title: Duodenal ulcer in Nigerians. A clinical study of 200 patients.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000175:diagnosis / Q000453:epidemiology / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009549:Nigeria; D011183:Postoperative Complications; D014628:Vagotomy