^○Katsuyoshi Baba, Yoshitaka Uji, Takashi Takao (Department of Surgery, Shin-Koga Hospital, Fukuoka, Japan)

^○Youichi Kawano¹, Satoshi Matsumoto¹, Nobuyuki Sakurazawa¹, Akihisa Matsuda¹, Kazuya Yamahatsu¹, Nobuhiko Taniai², Masato Yoshioka², Tetsuya Shimizu², Ryota Kondo², Yohei Kaneya², Yuto Aoki², Masao Miyashita², Hiroshi Yoshida¹ (1.Department of Surgery, Nippon Medical School Chiba Hokusou Hospital, 2.Department of Surgery, Nippon Medical School)

^○Yasuhiro Morita¹, Tatsuya Hayashi¹, Kijuro Takanishi² (1.Department of Surgery, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan, 2.Tama Hokubu Medical Center)

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

^○Masayuki Kojima, Yutaro Kato, ichiro Uyama, Sanae Nakashima, Akira Yasuda, Yoshinao Tanahashi, Gozo Kiguchi, Zenichi Morise, Atsushi Sugioka (Department of Surgery, Fujita Health University, Aichi, Japan)

^○Yukio Tokumitsu¹, Yoshihiro Tokuhisa¹, Kazuhiko Sakamoto¹, Kensuke Yamada¹, Taichi Kuwahara¹, Yasuhiro Fujiwara¹, Masao Nakajima¹, Takuya Fujimoto¹, Hiroto Matsui¹, Satoshi Matsukuma¹, Shinsuke Kanekiyo¹, Shinobu Tomochika¹, Michihisa Iida¹, Nobuaki Suzuki¹, Shigeru Takeda¹, Shigefumi Yoshino², Shoichi Hazama³, Tomio Ueno⁴, Hiroaki Nagano¹ (1.Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine., 2.Oncology Center, Yamaguchi University Hospital, 3.Department of Translational Research and Developmental Therapeutics against Cancer, Yamaguchi University School of Medicine, 4.Department of Digestive Surgery, Kawasaki Medical School)