^○Masayo Tsukamoto, Katsunori Imai, Yo-ichi Yamashita, Naoki Umezaki, Takanobu Yamao, Rumi Itoyama, Yosuke Nakao, Toshihiko Yusa, Shigeki Nakagawa, Hirohisa Okabe, Hidetoshi Nitta, Akira Chikamoto, Takatoshi Ishiko, Hideo Baba (Department of Gastroenterological Surgery, Graduate School of Life Sciences, Kumamoto University, Japan)

^○Akiko Omori, Yoshihito Kotera, Shunichi Ariizumi, Shingo Yamashita, Takaaki Kato, Satoshi Nemoto, Hiroto Egawa, Masakazu Yamamoto (Dept of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, Tokyo, JAPAN)

^○Yuji Morine, Satoru Imura, Tetsuya Ikemoto, shuichi Iwahashi, Yu Saito, Hiroki Teraoku, Jun Higashijima, Chie Takasu, Mitsuo Shimada (Department of Surgery, Institute of Health Biosciences, The University of Tokushima Graduate School)

^○Hideki Aoki, Masashi Utsumi (Department of Surgery, Iwakuni Clinical Center, Yamaguchi Japan)

^○Yohei Mano, Tomoharu Yoshizumi, Takashi Motomura, Yuki Bekki, Takeo Toshima, Shinji Itoh, Noboru Harada, Toru Ikegami, Yuji Soejima, Yoshihiko Maehara (Department of Surgery and Science, Kyushu University, Fukuoka, Japan)

^○Amane Takahashi, Katsumi Amikura, Daisuke Ito, Masatoshi Kajiwara, Hirohiko Sakamoto (Department of Gastroenterological Surgery, Saitama Cancer Center, Saitama, Japan)