^○Nao Kinjo, Eisuke Adachi, Shinichirou Maehara (Department of Surgery, Kyushu Central Hospital)

^○Katsutoshi Murase, Masaki Kimura, Shigeru Kiyama, Seishiro Sekino, Shinichiro Arakawa, Kiyoshi Doi (Department of General and cardiothoracic Surgery, Gifu university, Gifu, Japan)

^○Atsushi Shimizu¹, Motoki Yamamoto¹, Matoko Iwahashi¹, Satoru Sakaguchi¹, Hirotaka Kato¹, Yukari Tsubota², Rieko Kodama², Yasuhito Kobayashi¹ (1.Department of Surgery, Wakayama Rosai Hospital, Wakayama, Japan, 2.Department of Pathology, Wakayama Rosai Hospital, Wakayama, Japan)

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

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

^○Shinji Onda, Masashi Tsunematsu, Rui Marukuchi, Ryota Iwase, Koichiro Haruki, Jungo Yasuda, Junichi Shimada, Hironori Shiozaki, Taigo Hata, Takeshi Gocho, Hiroaki Shiba, Yuichi Ishida, Katsuhiko Yanaga (Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan)