^○Keiji Sano (Department of Surgery, Teikyo University School of Medicine)

^○Koo Jeong Kang (Division of HBP Surgery, Department of Surgery, Keimyung University Dong-San Medical Center, Daegu, Korea)

^○Cheng Chung Wu¹, Shih-Rong Hsieh¹, Ching-Hui Shen² (1.Department of Surgery, Taichung Veterans General Hospital, Taichung, Taiwan, 2.Anesthesiology, Taichung Veterans General Hospital, Taichung, Taiwan)

^○Takumi Fukumoto, Masahiro Kido (Department of Surgery, Division of Hepato-Biliary-Panreatic Surgery, Kobe University Graduate School of Medicine)

^○Deok-Bog Moon (Hepato-Biliary Surgery and Liver Transplantation, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea)