Hidenori Takahashi, Daisaku Yamada, Hiroshi Wada, Akira Tomokuni, Kei Asukai, Keijiro Sugimura, Kazuyoshi Yamamoto, Junichi Nishimura, Masayoshi Yasui, Takeshi Omori, Hiroshi Miyata, Masayuki Ohue, Masahiko Yano, Masato Sakon, Osamu Ishikawa (Dept. Surg., Osaka International Cancer Institute)

Joon Seong Park (Department of Surgery Gangnam Severance Hospital, Yonsei University)

Hidehiro Tajima, Mitsuyoshi Okazaki, Takahisa Yamaguchi, Yoshinao Ohbatake, Hiroyuki Shinbashi, Shiro Terai, Shinichi Nakanuma, Koichi Okamoto, Isamu Makino, Jun Kinoshita, Keishi Nakamura, Tomoharu Miyashita, Hiroyuki Takamura, Sachio Fushida, Tetsuo Ohta (Department of Gastroenterological Surgery, Kanazawa University)

Minako Nagai, Takahiro Akahori, Kenji Nakagawa, Kota Nakamura, Naoya Ikeda, Masayuki Sho (Department of Surgery, Nara Medical University)

Hironori Iwasaki, Tomokazu Tanaka, Takao Ide, Hirokazu Noshiro (Department of Surgery, Saga University)

Kenjiro Okada, Yoshiaki Murakami, Kenichiro Uemura, Naru Kondo, Naoya Nakagawa, Shingo Seo, Satoshi Hirahara, Taijiro Sueda (Hiroshima University Department of Surgery)

Shingo Kagawa¹, Hideyuki Yoshitomi¹, Katsunori Furukawa¹, Tsukasa Takayashiki¹, Satoshi Kuboki¹, Shigetsugu Takano¹, Daisuke Suzuki¹, Nozomu Sakai¹, Hiroyuki Nojima¹, Takashi Mishima¹, Eri Nakadai¹, Masaru Miyazaki², Masayuki Ohtsuka¹ (1.Dept of General Surgery, Chiba University, 2.International University of Health and Welfare Mita Hospital)

Keinosuke Ishido, Daisuke Kudo, Norihisa Kimura, Shinosuke Yonaiyama, Takanobu Akaishi, Kenichi Hakamada (Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine)