Endoscopy in upper gastro-intestinal disease in Nigerians.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004724:Endoscopy / Q000379:methods*; D005260:Female; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D009549:Nigeria