^○Tatsuki Fujiwara, Tomohiro Mizuno, Keiji Oi, Masafumi Yashima, Hidehito Kuroki, Kiyotoshi Oishi, Masashi Takeshita, Toshihiro Kubo, Yushi Okumura, Junya Nabeshima, Hirokuni Arai (Department of cardiovascular surgery, Tokyo Medical and Dental University)

^○Hideki Ueda, Hiroki Kouno, Kaoru Matsuura, Michiko Watanabe, Yoshinobu Enomoto, Tomohiko Inui, Daisuke Hiraoka, Yasunori Yakita, Yutaka Wakabayashi, Masahiko Fuji, Tomoyoshi Kanda, Shuntaro Ito, Goro Matsumiya (Chiba University Hospital Department of Cardiovascular Surgery)

^○Taisuke Nakayama, Takashi Harada, Shingo Isshiki, Hideki Sasaki, Hiroshi Ishitoya (Ehime prefectural central hospital)

^○Masahiro Mizumoto, Tetsuro Uchida, Azumi Hamasaki, Yoshinori Kuroda, Atsushi Yamashita, Shuto Hirooka, Ai Ishizawa, Kentaro Akabane, Mitsuaki Sadahiro (Second Department of Surgery, Yamagata University Faculty of Medicine, Yamagata, Japan)

^○Kenta Masada¹, Toru Kuratani², Kazuo Shimamura¹, Keiwa Kin¹, Takayuki Shijo², Takayoshi Ueno¹, Koichi Toda¹, Yoshiki Sawa¹ (1.Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Japan, 2.Department of Minimally Invasive Cardiovascular Medicine, Osaka University Graduate School of Medicine)