1. Department of Gastroenterological and Pediatric Surgery; Oita University Faculty of Medicine; Oita Japan
2. Liver Transplantation Program; Chang Gung Memorial Hospital-Kaohsiung Medical Center; Kaohsiung Taiwan
3. Department of Anesthesiology and Intensive Care Medicine; Oita University Faculty of Medicine; Oita Japan
4. Oita University; Oita Japan