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

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

^○Tomoyuki Minami¹, Keiji Uchida¹, Norihisa Karube¹, Tomoki Cho¹, Yusuke Matsuki¹, Hiroko Nemoto¹, Naoto Yabu¹, Yoshihiro Kushida¹, Noritake Kikunishi¹, Mifa Chu¹, Munetaka Masuda² (1.Cardiovascular Center, Yokohama City University Medical Center, Yokohama, Japan, 2.Department of Surgery, Yokohama City University Hospital, Yokohama, Japan)

^○Masahiko Ikebuchi, Yoshinori Inoue, Yusuke Kinugasa, Ryuta Tai, Mitsuru Sato, Hideki Teshima, Hiroyuki Irie (Chikamori Hospital)

^○Tomoya Uchimuro¹, Atsushi Shimizu¹, Kousaku Nishigawa¹, Toshihiro Fukui², Shuichirou Takanashi¹ (1.Sakakibara Heart Institute, 2.Kumamoto University)