[1] Kobe Univ, Dept Internal Med, Div Cardiovasc Med, Grad Sch Med, Kobe, Hyogo, Japan
[2] Kobe Univ, Dept Internal Med, Div Cardiovasc Med, Sect Arrhythmia,Grad Sch Med, Kobe, Hyogo, Japan
[3] Kobe City Med Ctr Gen Hosp, Dept Cardiol, Kobe, Hyogo, Japan
[4] Toyohashi Heart Ctr, Dept Cardiovasc Med, Toyohashi, Aichi, Japan
[5] Nihon Univ Med, Dept Med, Div Cardiol, Tokyo, Japan
[6] Takatsuki Gen Hosp, Heart Rhythm Ctr, Takatsuki, Osaka, Japan
[7] Natl Cerebral & Cardiovasc Ctr, Dept Cardiovasc Med, Suita, Osaka, Japan
[8] Kansai Rosai Hosp, Cardiovasc Ctr, Amagasaki, Hyogo, Japan
[9] Hyogo Prefectural Amagasaki Gen Med Ctr, Dept Cardiol, Amagasaki, Hyogo, Japan
[10] Kita Harima Med Ctr, Dept Cardiol, Ono, Hokkaido, Japan
[11] Akashi Med Ctr, Dept Cardiol, Akashi, Hyogo, Japan
[12] Hyogo Coll Med, Dept Cardiovasc & Renal Med, Nishinomiya, Hyogo, Japan
[13] Himeji Cardiovasc Ctr, Dept Cardiol, Himeji, Hyogo, Japan
[14] Kobe Rosai Hosp, Dept Cardiol, Kobe, Hyogo, Japan
[15] Kakogawa Cent City Hosp, Dept Cardiol, Kakogawa, Japan
[16] Osaka Saiseikai Nakatsu Hosp, Cardiovasc Div, Osaka, Japan