[1] Minoh City Hosp, Osaka, Japan
[2] Rinku Gen Med Ctr, Div Cardiol, Osaka, Japan
[3] Osaka Rosai Hosp, Div Cardiol, Sakai, Osaka, Japan
[4] Osaka Police Hosp, Div Cardiovasc, Osaka, Japan
[5] Osaka Gen Med Ctr, Div Cardiol, Osaka, Japan
[6] Amagasaki Chuo Hosp, Div Cardiol, Amagasaki, Hyogo, Japan
[7] Osaka Univ, Grad Sch Med, Dept Cardiovasc Med, Osaka, Japan