^○Isamu Makino, Shinichi Nakanuma, Tomoharu Miyashita, Hidehiro Tajima, Mitsuyoshi Okazaki, Takahisa Yamaguchi, Yoshinao Ohbatake, Hironori Hayashi, Hiroyuki Takamura, Tetsuo Ohta (Department of Gastroenterologic Surgery, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan)

^○Yoshiyuki Sasaki, Shinji Osada, Ryouma Yokoi, Ayana Goto, Hiroshi Tsuchiya, Takuji Sakuratani, Naoki Okumura, Kouji Matsui, Noriaki Hatou, Yasuyuki Sugiyama, Makoto Yamada (Department of Surgery, Gifu Municipal Hospital, Gifu, Japan)

^○Atsushi Miyamoto, Naoki Hama, Sakae Maeda, Takuya Hamakawa, Mamoru Uemura, Masakazu Miyake, Kazuhiro Nishikawa, Michihiko Miyazaki, Takeshi Kato, Motohiro Hirao, Mitsugu Sekimoto, Shoji Nakamori (Department of Surgery, National Hospital Organization Osaka National Hospital)

^○Hiroshi Kono, Mitsuaki Watanabe, Naohiro Hosomura, Hidetake Amemiya, Hiromichi Kawaida, Makoto Sudou, Hidenori Akaike, Yoshihiko Kawaguchi, Daisuke Ichikawa (First Department of Surgery)

^○Takuma Nishino¹, Mitsuhiro Morikawa¹, Daisuke Fujimoro¹, Kenji Koneri¹, Makoto Muramkami¹, Yasuo Hirono¹, Kanji Katayama², Takanori Goi¹ (1.First Department of Surgery, Faculty of Medicine, University of Fukui, Fukui, Japan, 2.Cancer Care Promotion Center, University of Fukui, Fukui, Japan)

^○Takeshi Murakami, Kennichi Matsuo, Atsushi Hirano, Yuuko Ikeda, Naohiro Aida, Hiroshi Suito, Toshiharu Hanaoka, Yasushi Okazaki, Kouichi Shinotou, Kouta Satou (Department of Surgery,Yokohama Rosai Hospital,Yokohama,Japan)