1. Liver Research Center and Department of Hepatogastroenterology, Chang Gung Memorial Hospital, Taoyuan, Taiwan, and Chang Gung University, Taoyuan, Taiwan 33305.
2. Department of Surgery, Chang Gung Children's Hospital, Taoyuan, Taiwan 33305.
3. Division of Pediatric Critical Care and Emergency Medicine, Chang Gung Children's Hospital, Taoyuan, Taiwan 33305.