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

^○Akinori Tamenishi, Yasuyuki Fujimoto, Chikao Teramoto (Department of Cardiovascular Surgery, Yokkaichi Municipal Hospital, Yokkaichi, Japan)

^○Naoki Washiyama, Norihiko Shiiya, Katsushi Yamashita, Daisuke Takahashi, Kazumasa Tsuda, Yumi Kando, Yuko Ohashi (First Department of Surgery, Hamamatsu University School of Medicine, Hamamatsu, Japan)

^○Kentaro Kamiya, Ryumon Matsumoto, Masaki Kano, Shun Suzuki, Keita Maruno, Atsunari Iwahori, Koji Kawago, Satoshi Takahashi, Toru Iwahashi, Koji Fukuda, Toshiya Nishibe, Hitoshi Ogino (Department of Cardiovascular Surgery, Tokyo Medical University, Tokyo, JAPAN)

^○Yosuke Mukae, Keiji Kamohara, Shugo Koga, Nozomi Yoshida (Kouseikai Hospital)

^○Hiroaki Izumida, Akihiro Yoshitake, Daisuke Kaneyuki, Akitoshi Takazawa, Jun Hayashi, Masato Tochii, Chiho Tokunaga, Tshihisa Asakura, Atsushi Iguchi, Hiroyuki Nakajima (Saitama School Of Medicine International Medical Center, Cardiovascular surgery)

^○Hiroshi Sato, Toshiro Ito, Ayaka Arihara, Akihito Okawa, Ryosuke Numaguchi, Yosuke Yanase, Yosuke Kudoda, Ryo Harada, Nobuyoshi Kawaharada (Department of Cardiovascular Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan)

^○Mitsuhiro Kawata, Tomohiro Murata, Akiko Mano, Takashi Nishimura, Shunei Kyo (Department of Cardiac Surgery, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan)