[1] Kitasato Univ, Sch Med, Cardiovasc Med, Sagamihara, Kanagawa, Japan
[2] Tohoku Univ, Grad Sch Med, Cardiovasc Med, Sendai, Miyagi, Japan
[3] Kumamoto Univ, Cardiovasc Med, Kumamoto, Japan
[4] Kyoto Med Ctr, Cardiol, Kyoto, Japan
[5] Kyushu Univ, Cardiovasc Med, Fukuoka, Japan
[6] Toho Univ, Ohashi Med Ctr, Cardiovasc Med, Tokyo, Japan
[7] Juntendo Univ, Sch Med, Cardiol, Tokyo, Japan
[8] Tokyo Womens Med Univ, Cardiol, Tokyo, Japan
[9] Yokohama City Univ, Med Ctr, Cardiovasc Ctr, Yokohama, Kanagawa, Japan
[10] Osaka Police Hosp, Cardiovasc Div, Osaka, Japan
[11] Kumamoto Univ Hosp, Gen & Community Med, Kumamoto, Japan
[12] Natl Cerebral & Cardiovasc Ctr, Suita, Osaka, Japan