1 Department of Pediatrics, Saint Paul's Hospital, 123, Jianxin Street, Taoyuan Dist., Taoyuan City, 33069, Taiwan.
2 Division of Pediatric Gastroenterology, Department of Pediatrics, Chang Gung Children's Medical Center, Chang Gung Memorial Hospital, 5 Fu-Hsing Street, Guishan District, Taoyuan City, 33305, Taiwan; Chang Gung University College of Medicine, 259, Wenhua 1st Rd., Taoyuan City, 33302, Taiwan. Electronic address: hcchao1021@gmail.com.
3 Chang Gung University College of Medicine, 259, Wenhua 1st Rd., Taoyuan City, 33302, Taiwan; Department of Pathology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 5 Fu-Hsing Street, Guishan District, 33305, Taoyuan City, Taiwan.