^○Koyu Watanabe, Konosuke Sasaki, Naoya Terao, Makoto Takahashi, Masaaki Naganuma, Hiroki Takaya, Yasunori Tadano, Yusuke Suzuki, Tomoyuki Suzuki, Ichiro Yoshioka, Goro Takahashi, Kiidhirou Kumagai, Masatoshi Akiyama, Osamu Adachi, Yoshikatsu Saiki (Division of Cardiovascular Surgery Tohoku University)

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

^○Kouzi Furukawa, Yuuka Hamahiro, Kazuhiro Higuti, Nobuhiko Ichiki, Hirohito Ishii, Eisaku Nakamura, Kunihide Nakamura (University of Miyazaki department of surgery division of cardiovascular surgery)

^○Munehiro Saiki¹, Keiji Yunoki¹, Youto Narumiya¹, Syouhei Yokoyama¹, Yoshimasa Kishi¹, Yuuki Ohga², Naoya Sakoda³, Takuya Kawabata¹, Yuu Oshima¹, Kunikazu Hisamichi¹, Hideo Yoshida¹ (1.Department of Cardiovascular Surgery, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan, 2.Hiroshima Teishin hospital, Hiroshima, Japan, 3.Department of Cardiovascular Surgery, Okayama University, Okayama, Japan)

^○Toru Iwahashi, Toshiya Nishibe, Kentarou Kamiya, Ryumon Matsumoto, Masaki Kanou, Shun Suzuki, Keita Maruno, Toshiki Fujiyoshi, Koji Kawago, Satoshi Takahashi, Nobusato Koizumi, Shouji Fukuda, Hitoshi Ogino (Department of cardiovascular surgery, Tokyo Medical University, Tokyo, Japan)

^○Makiko Omori, yuri Murakami, Masamichi Momose, Reo Takizawa, Takeshi Baba, Masayuki Hara, Koji Maeda, Hiromasa Tachihara, Takao Ohki (Division of Vascular surgery, Department of Surgery, Jikei University school of Medicine)

^○Takeshi Baba, Yuri Murakami, Masamichi Momose, Makiko Omori, Reo Takizawa, Masayuki Hara, Koji Maeda, Hiromasa Tachihara, Takao Ohki (Division of Vascular surgery, Department of Surgery, Jikei University school of Medicine,Tokyo.)

^○Hidetaka Yamauchi, Shinzi Miyamoto, Takahiro Tazima, Kazuki Mori, Kyouhei Hatori, Madoka Kawano, Satoshi Kozaki, Takashi Syutou, Hideyuki Tanaka, Hirohumi Anai (Oita University School of Medicine Cardiovascular Surgery Course)