^○Akihiro Yamamoto, Hirono Satokawa, Shinya Takase, Hiroki Wakamatsu, Yoshiyuki Sato, Yuki Seto, Hiroyuki Kurosawa, Tsuyoshi Fujimiya, Keiichi Ishida, Hitoshi Yokoyama (Department of cardiovascular surgery, Fukushima medical university)

^○Masato Mutsuga, Kazuro Fujimoto, Wataru Uchida, Hideki Ito, Sachie Terazawa, Yoshiyuki Tokuda, Yuji Narita, Toshiaki Akita, Akihiko Usui (Nagoya University, Graduate School of Medicine)

^○Takafumi Inoue, Kan Nawata, Osamu Kinoshita, Mitsutoshi Kimura, Haruo Yamauchi, Shogo Shimada, Sachito Minegishi, Masahiko Ando, Hyoe Komae, Yasuhiro Hoshino, Shun Tanaka, Minoru Ono (The University of Tokyo, Department of Cardiac Surgery, Tokyo, Japan)

^○Koji Hirano, Bun Nakamura, Ryosai Inoue, Masahiro Inagaki, Yasumi Maze, Toshiya Tokui, Hiromu Kitamura (Ise Red Cross Hospital)

^○Yushi Katagiri, Shigeki Yokoyama, Toshio Doi, Kazuaki Fukahara, Naoki Yoshimura (TOYAMA university)