^○Hirotaka Sato, kei aizawa, kouzi kawahito (Jichi medial university)

^○Kosuke Nakamae, Akihisa Furuta, Shogo Isomura, Takashi Azuma, Yoshihiko Yokoi, Satoru Domoto, Chizuo Kikuchi, Hiroyuki Saito, Satoshi Saito, Hiroshi Niinami (Tokyo Women's Medical University , Tokyo, Japan)

^○Nobuoki Tabayashi, Takehisa Abe, Tomoaki Hirose, Yoshihiro Hayata, Keigo Yamashita, Syun Hiraga, Ryohei Fukuba, Junichi Takemura, Hirosshi Nishikawa, Shigeki Taniguchi (Department of Thoracic and Cardiovascular Surgery, Nara Medical University, School of Medicine,)

^○Masahiro Daimon, Tatsuya Suzuki, Ryo Shimada, Shinji Fukuhara, Hiroaki Uchida, Sachiko Kanki, Yasuyoshi Yoshii, Hideki Ozawa, Takahiro Katsumata (Osaka Medical College)

^○Masanao Nakai, Hirosi Mituoka, Yujiro Miura, Yasuhiko Terai, Shinnosuke Goto, Yuta Miyano, Shinnji Kawaguti, Tooru Koakutu (Cardiovascular Surgery, Shizuoka city Shizuoka Hospital, Shizuoka, Japan)

^○Hideki Ito, Yuji Narita, Kazurou Fujimoto, Masato Mutsuga, Yoshiyuki Tokuda, Sachie Terazawa, Wataru Uchida, Shinichi Ashida, Yasunari Hayashi, Tsukasa Ohno, Toshihiko Nishi, Akihiko Usui (Department of Cardiac Surgery, Nagoya University Graduate School of Medicine)

^○Hiroyuki Otsuka, Seiji Onitsuka, Tohru Takaseya, Shohei Yoshida, Ryo Kanamoto, Tomoyuki Anegawa, Kanako Sakurai, Yusuke Shintani, Takahiro Shojima, Kazuyoshi Takagi, Satoru Tobinaga, Koichi Arinaga, Shinichi Hiromatsu, Hiroyuki Tanaka (Department of Surgery, Kurume University, Kurume, Japan)

^○Hiroko Nemoto¹, Keiji Uchida¹, Norihisa Karube¹, Tomoyuki Minami¹, Tomoki Cho¹, Yusuke Matsuki¹, Naoto Yabu¹, Yoshihiro Kushida¹, Noritake Kikunishi¹, Mifa Chu¹, Munetaka Masuda² (1.Yokohma City University Medical Center, Cardiovascular Center, 2.Yokohama City University, the Department of Surgery)