^○Toshiro Ogura¹, Tomotaka Kato¹, Masahumi Akasu¹, Jun Yoshino¹, Syuichi Watanabe¹, Norimichi Chiyonobu¹, Yuki Mizuno¹, Keiichi Akahoshi¹, Kousuke Ogawa¹, Hiroaki Ono¹, Yusuke Mitsunori¹, Daisuke Ban¹, 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)

^○Katsuhisa Hirano, Tadashi Bando (Department of Surgery, Saiseikai Toyama Hospital, Toyama, Japan)

^○Takuya Fujimoto¹, Yoshihiro Tokuhisa¹, Kensuke Yamada¹, Taichi Kuwahara¹, Yasuhiro Fujiwara¹, Masao Nakashima¹, Satoshi Matsukuma¹, Hiroto Matsui¹, Yukio Tokumitsu¹, Shinobu Tomochika¹, Shinsuke Kanekiyo¹, Michihisa Iida¹, Kazuhiko Sakamoto¹, Nobuaki Suzuki¹, Shigeru Takeda¹, Shigehumi Yoshino², Shoichi Hazama³, Tomio Ueno⁴, Hiroaki Nagano¹ (1.Department of Gastroenterological ,Brest and Endocrine Surgery, 2.Oncology Center, Yamaguchi University Hospital, Yamaguchi, Japan, 3.Department of Translational Research and Developmental Therapeutics against Cancer, 4.Department of Digestive Surgery, Kawasaki Medical School)

^○Mamoru Sato, Junichiro Yamuchi, Tomoya Miura (Department of Gastroenterological Surgery,Sendai Kousei Hosipital, Tokyo, Japan)

^○Kento Mishima, Daisuke Sato, Naoki Mimura, Hiroyoshi Matsukawa, Shigehiro Shiozaki (Deparrtment of Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan)

^○Masahiko Honjo, taiji Toyama, Katsunori Sakamoto, Jota Watanabe, Akihiro Takai, Hisato Yamamoto, Yoshitomo Ueno, Kei Tamura, Hitoshi Inoue, Kohei Ogawa, Yasutsugu Takada (Department of HBP Surgery, University, Ehime, Japan)