[1] Kyoto Univ, Dept Cardiovasc Med, Grad Sch Med, Kyoto, Japan
[2] Hyogo Coll Med, Dept Clin Epidemiol, Nishinomiya, Hyogo, Japan
[3] Shiga Gen Hosp, Dept Cardiovasc Med, Moriyama, Shiga, Japan
[4] Tenri Hosp, Div Cardiol, Tenri, Nara, Japan
[5] Kobe City Med Ctr Gen Hosp, Dept Cardiovasc Med, Kobe, Hyogo, Japan
[6] Hyogo Prefectural Amagasaki Gen Med Ctr, Dept Cardiol, Amagasaki, Hyogo, Japan
[7] Natl Hosp Org Kyoto Med Ctr, Dept Cardiol, Kyoto, Japan
[8] Mitsubishi Kyoto Hosp, Dept Cardiol, Kyoto, Japan
[9] Shimabara Hosp, Dept Cardiol, Kyoto, Kyoto, Japan
[10] Japanese Red Cross Otsu Hosp, Dept Cardiol, Otsu, Shiga, Japan
[11] Hikone Municipal Hosp, Dept Cardiol, Hikone, Shiga, Japan
[12] Osaka Red Cross Hosp, Dept Cardiol, Osaka, Osaka, Japan
[13] Kishiwada City Hosp, Dept Cardiol, Kishiwada, Osaka, Japan
[14] Kansai Elect Power Hosp, Dept Cardiol, Osaka, Osaka, Japan
[15] Shizuoka Prefectural Gen Hosp, Dept Cardiol, Shizuoka, Shizuoka, Japan
[16] Kurashiki Cent Hosp, Dept Cardiol, Kurashiki, Okayama, Japan
[17] Kokura Mem Hosp, Dept Cardiol, Kokura, Fukuoka, Japan
[18] Japanese Red Cross Wakayama Med Ctr, Dept Cardiol, Wakayama, Japan
[19] Kobe City Nishi Kobe Med Ctr, Dept Cardiol, Kobe, Hyogo, Japan
[20] Kitano Hosp, Osaka, Osaka, Japan
[21] Shinshu Univ, Dept Cardiovasc Med, Grad Sch Med, Matsumoto, Nagano, Japan