^○Takahiro Akiyama, Hisashi Kametaka, Hironobu Makino, Tadaomi Fukada, Shunsuke Tabe (Department of Surgery, Odawara Municipal Hospital, Kanagawa, Japan)

^○Yuki Yokota, Kozo Noguchi, Yoshito Tomimaru, Keizo Dono (Department of Surgery, Toyonaka Municipal Hospital)

^○Junji Ueda, Hiroshi Yoshida, Hiroshi Makino, Tadashi Yokoyama, Hiroshi Maruyama, Atsushi Hirakata, Hideyuki Takata, Natsuki Seki, Koji Ueda, Teppei Miyashita, Mashumi Yoshioka, Yuta Kikuchi, Makoto Kusakabe, Toshiyuki Irie, Keiichi Asami (Department of Surgery, Nippon Medical School Tama-Nagayama Hospital)

^○Unenbat Gurbadam, Taivan. N, Khanui. L, Janchiv, Taivanbaatar. E, Chinburen. J (Hepato-Pancreato Biliary Surgical Department National Cancer Center of Mongolia)

^○Tomohiro Okamoto, Yoichiro Uchida, Akimori Miki, Ryo Ohno, Kentaro Kadono, Ryo Kamimura, Masashi Horiguchi, Hiroaki Terajima (Department of Gastroenterological Surgery and Oncology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute)

^○Tomotaka Kato¹, Daisuke Ban¹, Masahumi Akasu¹, Jun Yoshino¹, shuichi Watanabe¹, Keichi Akahoshi¹, 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, Tokyo, Japan, 2.Department of Molecular Oncology, Tokyo Medical and Dental University, Tokyo, Japan)