Yusuke Kondo1, Marehiko Ueda2, Yoshio Kobayashi2. 1. Department of Advanced Cardiovascular Therapeutics, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan. 2. Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.