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