^○Ki-Hun Kim^1,2 (1.Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Ulsan University, Seoul, Korea, 2.Asan Medical Center, Seoul, Korea)

^○Daisuke Ban¹, Tomotaka Kato¹, Masafumi Akasu¹, Jun Yoshino¹, Daisuke Asano¹, Shuichi Watanabe¹, Toshiro Ogura¹, Kosuke Ogawa¹, Hiroaki Ono¹, Yusuke Mitsunori¹, Atsushi Kudo¹, Shinji Tanaka², Minoru Tanabe¹ (1.Department of Hepatobiliary and Pancreatic Surgery, Tokyo Medical and Dental University, 2.Department of Molecular Oncology, Tokyo Medical and Dental University)

^○Yuichiro Otsuka, Yoshihisa Kubota, Toshio Katagiri, Yuko Ito, Yu Matsumoto, Kazutaka Kimura, Rei Okada, Masaru Tsuchiya, Tetsuya Maeda, Hironori Kaneko (Departomet of Surgery (Omori), Toho Univercity Faculty of Medicine)

^○Akishige Kanazawa¹, Shintaro Kodai¹, Sadatoshi Shimizu¹, Akihiro Murata¹, Yorihisa Urata¹, Kouhei Nishio¹, Masahiko Kinoshita¹, Genya Hamano¹, Toru Inoue², Yukio Nishiguchi² (1.Hepato-Biliary-Pancreatic Surgery, Osaka City General Hospital, Osaka, Japan, 2.Gastroenterological Surgery, Osaka City General Hospital, Osaka, Japa)

^○Yasushi Hasegawa, Hiroyuki Nitta, Takeshi Takahara, Hirokatsu Katagiri, Shoji Kanno, Akira Umemura, Akira Sasaki (Department of Surgery, Iwate Medical University School of Medicine, Morioka, Japan)

^○Yusuke Ome, Goro Honda, Jun Yamamoto, Manami Doi, Yuki Homma (Department of Hepato-Biliary-Pancreatic Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan)

^○Zenichi Morise¹, Masashi Isetani², Satoshi Arakawa², Yukio Asano², Norihiko Kawabe², Akihiko Horiguchi² (1.Department of Surgery, Fujita Health University School of Medicine, 2.Department of Surgery, Fujita Health University Banbuntane Houtokukai Hospital)

^○Osamu Itano¹, Yuta Abe², Masahiro Shinoda², Minoru Kitago², Hiroshi Yagi², Kiminori Takano², Go Oshima², Taiga Wakabayashi², Yutaka Nakano², Shunichi Imai¹, Shoichi Fujii¹, Masahiro Yoshida¹, Yuko Kitagawa² (1.Department of Hepato-Biliary-Pancreatic & Gastrointestinal Surgery, International University of Health and Welfare School of Medicine, Chiba, Japan, 2.Department of Surgery, Keio University School of Medicine, Tokyo, Japan)