^○Go Shinke, Daisaku Yamada, Hidetoshi Eguchi, Yoshifumi Iwagami, Tadafumi Asaoka, Takehiro Noda, Koichi Kawamoto, Kunihito Gotoh, Shogo Kobayashi, Yuichiro Doki, Masaki Mori (Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University)

^○Toshikatsu Nitta¹, Jun Kataoka¹, Kensuke Fujii^1,2, Yoshihiro Inoue², Takashi Ishibashi¹, Kazuhisa Uchiyama² (1.Division of Surgery, Gastroentelogical Center, Medico Shunjyu Shiroyama Hospital, 2.Osaka Medical College Division of liver Gastroentelogical Surgery)

^○Mitsuhiko Kusakabe, Mistutaka Kondou, Noriyuki Takeuchi, Yoshinori Mushika, Kenichi Nonaka (Department od Surgery, Daiyukai General Hospital, Ichinomiya, Japan)

^○Akira Kondo (Department of Surgery, Hakuai Hospital, Yonago, Japan)

^○Hajime Imamura (Department of Surgery, Nagasaki Harbor Medical Center)

^○Kota Sahara, Ryusei Matsuyama, Nobuhiro Tsuchiya, Takashi Murakami, Yasuhiro Yabushita, Yu Sawada, Takafumi Kumamoto, Itaru Endo (Department of Gastroenterological Surgery, Yokohama City University)