[1] Hamamatsu Univ Sch Med, Div Cardiol, Internal Med 3, Hamamatsu, Shizuoka, Japan
[2] Kitasato Univ Sch Med, Cardiovasc Med, Sagamihara, Kanagawa, Japan
[3] Natl Cerebral & Cardiovasc Ctr Hosp, Cardiovasc Med, Osaka, Japan
[4] Osaka Univ Grad Sch Med, Cardiovasc Med, Osaka, Japan
[5] Kameda Med Ctr, Cardiol, Chiba, Japan
[6] Kobe Univ Grad Sch Med, Div Cardiovasc Med, Dept Internal Med, Kobe, Hyogo, Japan
[7] Nagoya Univ Grad Sch Med, Cardiol, Nagoya, Aichi, Japan
[8] Kochi Univ, Cardiol & Geriatr, Kochi, Japan
[9] Juntendo Univ Grad Sch Med, Cardiovasc Biol & Med, Tokyo, Japan