^○Tomoo Kosuge (Gastrointestinal Surgery, Sangenjyaya Daiichi Hospital)

^○Dong-Sup Yoon (Gangnam Severance Hospital, Yonsei University College of Medicine, Korea)

^○Wenhui Lou (Department of Surgery, Zhongshan Hospital, Fudan University, China)

^○Yuichiro Uchida, Toshihiko Masui, Akitada Yogo, Kenzo Nakano, Asahi Sato, Kazuyuki Nagai, Takayuki Anazawa, Kyoichi Takaori, Shinji Uemoto (Division of Hepatobiliary Pancreatic Surgery and Transplantation, Department of Surgery, Kyoto University)

^○Tatsuo Hata, Masamichi Mizuma, Kei Nakagawa, Fuyuhiko Motoi, Masahiro Iseki, Tatsuyuki Takadate, Kyohei Ariake, Kunihiro Masuda, Masaharu Ishida, Koji Fukase, Hideo Ohtsuka, Takanori Morikawa, Hiroki Hayashi, Takeshi Naitoh, Michiaki Unno (Department of Surgery, Tohoku University Graduate School of Medicine)

^○Tomonari Asano, Suguru Yamada, Hideki Takami, Masaya Suenaga, Masamichi Hayashi, Yukiko Niwa, Yoshiyasu Kato, Mitsuru Tashiro, Haruyoshi Tanaka, Daishi Morimoto, Nobutake Tanaka, Yasuhiro Kodera (Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan)

^○Kohei Nakata, Takao Ohtsuka, Yasuhisa Mori, Yoshihiro Miyasaka, Masafumi Nakamura (Department of Surgery and Oncology, Kyushu University, Fukuoka, Japan)