Yusuke Uemoto1, Kojiro Taura2. 1. Division of Hepato Biliary Pancreatic Surgery and Transplantation, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan. uemoto6001@kuhp.kyoto-u.ac.jp. 2. Division of Hepato Biliary Pancreatic Surgery and Transplantation, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.