^○Yuki Seto, Hirono Satokawa, Shinya Takase, Hiroki Wakamatsu, Yoshiyuki Sato, Hiroyuki Kurosawa, Takashi Igarashi, Akihiro Yamamoto, Tsuyoshi Fujimiya, Keiichi Ishida, Hitoshi Yokoyama (Department of Cardiovascular Surgery, school of medicine, Fukushima Medical University)

^○Keiichi Ishida, Hirono Satokawa, Shinya Takase, Hiroki Wakamatsu, Yoshiyuki Sato, Hiroyuki Kurosawa, Yuki Seto, Takashi Igarashi, Akihiro Yamamoto, Tsuyoshi Fujimiya, Hitoshi Yokoyama (Department of Cardiovascular Surgery, School oh Medicine, Fukushima Medical University)

^○Seiichi Yamaguchi, Hisanori Fujita, Yusuke Shibata, Shigeyasu Takeuchi (Chiba Emergency Medical Center)

^○Yasumi Maze, Bun Nakamura, Ryousai Inoue, Masahiro Inagaki, Kouji Hirano, Tosiya Tokui (Ise Red Cross Hospital, Cardiovascular Surgery, Ise, Japan)

^○Shoichi Suehiro, Hiromi Wada, kouji Shimizu, Kensuke Imai, Teiji Oda (Shimane University)