Upper gastrointestinal tract endoscopy.
D000005:Abdomen; D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003680:Deglutition Disorders / Q000175:diagnosis; D004381:Duodenal Ulcer / Q000175:diagnosis; D004724:Endoscopy; D005260:Female; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010146:Pain / Q000175:diagnosis; D010372:Pediatrics; D011182:Postoperative Care; D014839:Vomiting / Q000175:diagnosis