The value of upper gastrointestinal endoscopy in children.
D000293:Adolescent; D000768:Anesthesia, General / Q000379:methods; D002648:Child; D002675:Child, Preschool; D004381:Duodenal Ulcer / Q000150:complications; D004382:Duodenitis / Q000150:complications; D019723:Endoscopes; D004724:Endoscopy; D004941:Esophagitis / Q000150:complications; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D007223:Infant; D013276:Stomach Ulcer / Q000150:complications