^○Tetsuo Ajiki^1,2, Kimihiko Ueno¹, Masayuki Akita¹, Daisuke Tsugawa¹, Taku Matsumoto¹, Masahiro Kido¹, Hirochika Toyama¹, Takumi Fukumoto¹ (1.Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 2.Department of Surgery, International Clinical Cancer Research Center, Kobe University Graduate School of Medicine)

^○Supriya Sharma, Vinay Kumar Kapoor (Department of Surgical Gastroenterology)

^○Kensuke Yamada¹, Yukio Tokumitsu¹, Yoshihiro Tokuhisa¹, Taichi Kuwahara¹, Yasuhiro Fujiwara¹, Masao Nakajima¹, Takuya Fujimoto¹, Satoshi Matsukuma¹, Hiroto Matsui¹, Shinsuke Kanekiyo¹, Shinobu Tomochika¹, Michihisa Iida¹, Kazuhiko Sakamoto¹, Nobuaki Suzuki¹, Shigeru Takeda¹, Shigefumi Yoshino², Shoichi Hazama³, Tomio Ueno⁴, Hiroaki Nagano¹ (1.Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Japan, 2.Yamaguchi University Hospital Cancer Center, Ube, Japan, 3.Department of Translational Research and Developmental Therapeutics against Cancer, Yamaguchi University School of Medicine, Ube, Japan, 4.Department of Digestive Surgery, Kawasaki Medical School, Kurashiki, Japan)

^○Takashi Uematsu, Toshiya Higashi, hiroto Tsujimoto, Takuya Yamada (Department of Surgery, Hashima City Hospital, Gifu, Japan)

^○Yuhei Endo, Hiroshi Noda, Fumiaki Watanabe, Naoya Kasahara, Takaharu Kato, Toshiki Rikiyama (Department of Surgery, Saitama Medical Center, Jichi Medical University, Saitama)

^○Daisuke Miyasaka, Keisuke Okamura, Takehiro Maki, Yoshitsugu Nakanishi, Toshimichi Asano, Takehiro Nori, Toru Nakamura, Takahiro Tsuchikawa, Satoshi Hiring (Department of Gastroenterological Surgery II, Division of Surgery, Graduate School of Medicine, Hokkaido University)