^○Yu Sawada, Nobutoshi Horii, Takafumi Kumamoto, Nobuhiro Tuchiya, Takashi Murakami, Yasuhiro Yabushita, Yuki Homma, Ryusei Matsuyama, Itaru Endo (Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine)

^○Atsushi Miyoshi, Hiroaki Nakamura, Satomi Nakamura, Kohei Yamada, Hiroki Koga, Hiroshi Kubo, Masatsugu Hiraki, Osamu Ikeda, Toshiya Tanaka, Kenji Kitahara (Department of Surgery, Saga Medical Centre Koseikan)

^○Sho Kiritani, Junichi Arita, Daisuke Ito, Nobuhisa Akamatsu, Junichi Kaneko, Kiyoshi Hasegawa (Hepato-Biliary-Pancreatic Surgery Division, Artificial Organ and Transplantation Division, Graduate School of Medicine, University of Tokyo)

^○Katsunori Furukawa, Daisuke Suzuki, Hideyuki Yoshitomi, Tsukasa Takayashiki, Satoshi Kuboki, Shigetsugu Takano, Nozomu Sakai, Shingo Kagawa, Hiroyuki Nojima, Takashi Mishima, Masayuki Ohtsuka (Department of General Surgery, Chiba University, Chiba, Japan)

^○Hiroyuki Tahara, Michinori Hamaoka, Seiichi Shimizu, Shintaro Kuroda, Masahiro Ohira, Tsuyoshi Kobayashi, Hideki Ohdan (Department of Gastroenterological and Transplant Surgery, Hiroshima University, Hiroshima, Japan)

^○Hiroya Iida, Hiromitsu Maehira, Naomi Kitamura, Haruki Mori, Toru Miyake, Tomoharu Shimizu, Masaji Tani (Department of Surgery, Shiga University of Medical Science)

^○Naoko Kamo, Toshimi Kaido, Yuhei Hamaguchi, Shintaro Yagi, Hideaki Okajima, Shinji Uemoto (Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Kyoto University)