Adolescent 1 Age Factors 1 American Society for Gastrointestinal Endoscopy 1 American society for gastrointestinal endoscopy 1 Child 1 Child, Preschool 1 Colonoscopy 1 Con-tributive yield 1 Contributive yield 1 Endoscopy, Gastrointestinal 1 Esophagogastroduodenoscopy 1 Female 1 Gastrointestinal Diseases 1 Hepa-tology and nutrition 1 Humans 1 Infant 1 Malaysia 1 Male 1 North American Society for Pediatric Gastroenterology, Hepatology and Nutrition 1 North American society for pediatric gastroenterology 1 Patient Selection 1 Pediatric gastrointestinal endoscopy Pediatricgastrointestinal endoscopy 1 Predictive Value of Tests 1 Prognosis 1 Retrospective Studies 1 Unnecessary Procedures 1 adolescent 1 adult 1 article 1