Gastrointestinal endoscopy in the young.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004724:Endoscopy; D005069:Evaluation Studies as Topic; D005260:Female; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D006801:Humans; D008297:Male; D012189:Retrospective Studies