1. Division of Hepatogastroenterology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, 123 Ta Pei Road, Kaohsiung 833401, Taiwan
2. Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, 123 Ta Pei Road, Kaohsiung 833401, Taiwan
3. Biostatistics Center of Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833401, Taiwan