^○Takuji Sakuratani, Shinji Osada, Yoshiyuki Sasaki, Ayana Goto, Ryoma Yokoi, Hiroshi Tsuchiya, Naoki Okumura, Koji Matsui, Makoto Yamada, Yasuyuki Sugiyama (Department of Surgery, Gifu Municipal Hospital)

^○Seiji Yamagishi¹, Satoshi Mizutani¹, Hideyuki Suzuki¹, Rina Oyama¹, Takao Shimizu¹, Makoto Sukagawa¹, Eiji Uchida² (1.nstitute of Gastroenterology, Nippon Medical School Musashikosugi Hospital, Kawasaki, Japan, 2.Department of Surgery, Nippon Medical School,Tokyo, Japan)

^○Mitsuyoshi Okazaki¹, Hironori Hayashi¹, Takahisa Yamaguchi¹, Yoshinao Ohbatake¹, Shinichi Nakanuma¹, Isamu Makino¹, Tomoharu Miyashita¹, Hidehiro Tajima¹, Hiroyuki Takamura¹, Kazuhiro Hanazaki², Tetsuo Ohta¹ (1.Department of Gastroenterological Surgery, Kanazawa University, 2.Department of Surgery 1, Kochi University, Kochi, Japan)

^○Naoki Sakurai, Naoki Mori, Hajime Iizawa (Department of Surgery, Yamagata Prefectural Central Hospital, Yamagata, Japan)

^○Yukio Asano, Shin Ishihara, Masahiro Ito, Satoshi Arakawa, Masahiro Shimura, Chihiro Hayashi, Kanshiro Kamio, Toki Kawai, Hironobu Yasuoka, Takahiko Higashiguchi, Akihiko Horiguchi (Department of Gastroenterological Surgery, School of Medicine, Fujita Health University Banbuntane Houtokukai Hospital)

^○Yusuke Mitsunori¹, Masafumi Akasu¹, Tomotaka Kato¹, Jyun Yoshino¹, Syuichi Watanabe¹, Norimichi Chiyonobu¹, Keiichi Akahoshi¹, Toshiro Ogura¹, Kosuke Ogawa¹, Hiroaki Ono¹, Daisuke Ban¹, Atsushi Kudo¹, Shinji Tanaka², Minoru Tanabe¹ (1.Department of Hepato Biliary Pancreatic Surgery, Tokyo Medical and Dental University, 2.Department of Molecular Oncology, Tokyo Medical and Dental University)