^○Kosaku Nishigawa, Tomoya Uchimuro, Atsushi Shimizu, Shuichiro Takanashi (Sakakibara Heart Institute, Tokyo, Japan)

^○Shohei Morita, Shinya Takahashi, Keijiro Katayama, Takanobu Okazaki, Masazumi Watanabe, Yoshitaka Yamane, Tatsuya Kurosaki, Taijiro Sueda (Hiroshima University Hospital, Hiroshima, Japan)

^○Hiroaki Takahashi¹, Atsunori Kono¹, Akitoshi Yamada¹, Tatsuro Asada¹, Kunio Gan¹, Yutaka Okita² (1.Kita-Harima Medical Center, Department of Cardiovascular Surgery, 2.Takatsuki General Hospital)

^○Yosuke Inoue, Hitoshi Matsuda, Jiro Matsuo, Atsushi Omura, Yoshimasa Seike, Kyokun Uehara, hiroaki Sasaki, Junjiro Kobayashi (Department of Cardiovascular Surgery, National Cerebral and Cardiovascular Center)

^○Tomonobu Abe¹, Wataru Tatsishi¹, Tomo Yoshizumi¹, Akihiko Usui², Toshimichi Nonaka³ (1.Gunma University, Division of Cardiovascular Surgery, 2.Department of Cardiac Surgery, Nagoya University, 3.JCHO Chukyo Hospital)

^○Toshihito Gomibuchi, Toru Mikoshiba, Kai Machida, Masaki Komatsu, Hajime Ichimura, Takateru Yamamoto, Noburo Ohashi, Meguru Fuke, Yuko Wada, Tatsuichiro Seto, Kenji Okada (Shinshu University)

^○Yoshinori Kuroda, Tetsuro Uchida, Azumi Hamasaki, Masahiro Mizumoto, Atsushi Yamashita, Stuto Hirooka, Ai Ishizawa, Kentaro Akabane, Mitsuaki Sadahiro (Department of Surgery II, Yamagata University Faculty of Medicine)