^○Syouhei Yokoyama¹, keiji Yunoki¹, Munehiro Saiki¹, Yuuto Narumiya¹, Yoshimasa Kishi¹, Yuuki Ohga², Naoya Sakoda³, Takuya Kawabata¹, Yuu Ohshima¹, Kunikazu Hisamochi¹, 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)

^○Satoshi Kamihira, Kazuma Kanetuki, Tomoki Hanada, Masanobu Yamauchi (Department of Cardiovascular Surgery, Shimane Prefectural Central Hospital, Izumo, Shimane, Japan)

^○Koji Maeda, Yuri Murakami, Masamichi Momose, Makiko Omori, Reo Takizawa, Takeshi Baba, Masayuki Hara, Hiromasa Tachihara, Takao Ohki (Jikei university school of medicine)

^○Dai Tasaki, Tomoya Yoshizaki, Kenji Yokoyama (Musashino Red Cross Hospital, Tokyo, Japan)

^○Keiwa Kin, Kazuo Shimamura, Takayuki Shijyou, Kenta Masada, Takayoshi Ueno, Kouichi Toda, Yoshiki Sawa (Dept. of Cardiovascular Surgery, Osaka University Graduate School of Medicine)

^○Yoshihiko Yokoi, Takashi Azuma, Shougo Isomura, Satoru Doumoto, Masahide Komagamine, Hiroshi Niinami (Tokyo women's Medical University)

^○Makoto Sumi¹, Junji Takahashi¹, Yasutake Momokawa¹, Hirohumi Haida², Takayuki Abe², Ken Nakamura², Makoto Hanai², Tsuneyasu Orii², Takao Ohki³ (1.Department of Cardiovascular Surgery, Saitama Cardiovascular and Respiratory Center, 2.Department of Cardiovascular Surgery, Saitama Cardiovascular and Respiratory Center, 3.Jikei University, School of Medicine Department of Surgery, Vascular Surger y)

^○Shinsuke Kotani, Takumi Ishikawa, Tadahiro Murakami, Hirokazu Minamimura (Bellland General Hospital, Osaka, Japan)