Fibreoptic endoscopy in upper gastrointestinal bleeding: experience in Ibadan, Nigeria.
D000293:Adolescent; D000328:Adult; D002648:Child; D004724:Endoscopy; D005260:Female; D005336:Fiber Optic Technology; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis* / Q000628:therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D009549:Nigeria