^○Chang Moo Kang (Division of HBP Surgery, Department of Surgery, Yonsei University College of Medicine, Pancreatobiliary Cancer Center, Severance Hospital, Seoul, Korea)

^○Hideyuki Yoshitomi, Tsukasa Takayashiki, Katsunori Furukawa, Satoshi Kuboki, Shigetsugu Takano, Daisuke Suzuki, Nozomu Sakai, Shingo Kagawa, Hiroyuki Nojima, Takashi Mishima, Masayuki Ohtsuka (Department of General Surgery, Chiba University, Chiba, Japan)

^○Masanao Kurata, Osamu Shimomura, Kazuhiro Takahashi, Tatsuya Oda, Nobuhiro Ohkohchi (Department of GI and HBP Surgery, University of Tsukuba)

^○Yoshiharu Nakamura, Akira Matsushita, Eiji Uchida (Department of Gastrointestinal and Hepato-Biliary Pancreatic Surgery, Nippon Medical School, Tokyo, Japan)