^○Yuka Abe, Mitsutaka Sugita, Masahiro Fuse, Tomoya Hirai, Eiichi Nakao, Manabu Maebashi, Hiroki Fujiwara, Natsuko Sugimasa, Akira Watanabe, Hidetaka Ono, Hiroyuki Baba, Tetsuo Abe (Yokohama City Minato Red Cross Hospital)

^○Kazuhiro Yada, Yoshihiro Matsumoto, Kiminori Watanabe, Yusuke Yonemura, Takahiro Terashi, Tatsuya Rikimaru, Toshio Bandoh, Tohru Utsunomiya (Department of Surgery, Oita Prefectural Hospital, Oita, Japan)

^○Takeshi Sunami (Deparyment of Surgery, Izumi Municipal Hospital, Osaka, Japan)

^○Soichiro Honjo, Masataka Amisaki, Ei Uchinaka, Masaki Morimoto, Naruo Tokuyasu, Teruhisa Sakamoto (Department of Surgery, Division of Surgical Oncology, Tottori University, Tottori, Japan)

^○Xueyin Shen, Xu-Guang Hu, Sung-Yeon Hong, Bong-Wan Kim, Hee-Jung Wang (Department of Surgery, Ajou University)

^○Yasunori Uesato, Masayuki Shiraishi, Akehiro Oshita, Ryo Takahashi, Tadashi Nishimaki (Department of Gastroenterological Surgery, Graduate School of Medicine, Ryukyu University, Okinawa, Japan)