^○Satoshi Iino, Masahiko Sakoda, Shinichi Ueno, Yota Kawasaki, Motoyuki Hashiguchi, Kiyonori Tanoue, Hiroshi Kurahara, Yuko Mataki, Kosei Maemura, Hiroyuki Shinchi, Syoji Natsugoe (Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University, Kagoshima, Japan)

^○Kazuto Shibuya, Isaku Yoshioka, Shinichi Sekine, Katsuhisa Hirano, Hayato Baba, Tsutomu Fujii (Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Science, University of Toyama)

^○Masashi Nakamura, Shinya Hayami, Masaki Ueno, Manabu Kawai, Seiko Hirono, Ken-ichi Okada, Motoki Miyazawa, Yuji Kitahata, Norihiko Suzaki, Ryohei Kobayashi, Hiroki Yamaue (Second Department of Surgery, Wakayama Medical University, Wakayama, Japan)

^○Kiminori Watanabe, Yoshihiro Matsumoto, Yusuke Yonemura, takahiro Terashi, Tatsuya Rikimaru, Kazuhiro Yada, Toshio Bando, Tooru Utsunomiya (Department of Surgery, Oita prefectual Hospital, Oita, Japan)

^○Hiroaki Tamura, Yoshirou Nishiwaki, Masahito Ogiku, Yoshito Ikematsu (Department of Gastroenterological Surgery, Hamamatsu Medical Center, Hamamatsu, Japan)

^○Satoki Kojima, Yuichi Goto, Yoriko Nomura, Daisuke Muroya, Syoichiro Arai, Hisamune Sakai, Ryuichi Kawahara, Yoshito Akagi, Hiroyuki Tanaka, Koji Okuda (Department of Surgery, Kurume University School of Medicine, Kurume, Japan)