1. Division of Pediatric Gastroenterology; Department of Pediatrics; Chang Gung Children's Medical Center; Chang Gung Memorial Hospital; Taoyuan City Taiwan
2. Chang Gung University College of Medicine; 5 Fu-Hsing Street, Gueishan District Taoyuan City Taiwan
3. Division of Pediatric General Medicine; Department of Pediatrics; Chang Gung Children's Medical Center; Chang Gung Memorial Hospital; Taoyuan City Taiwan
4. Department of Nutritional Therapy; Chang Gung Memorial Hospital; Taoyuan City Taiwan