[1] Kumamoto Univ, Grad Sch Med Sci, Dept Cardiovasc Med, Kumamoto 8608556, Japan
[2] Kumamoto City Hosp, Div Cardiol, Kumamoto, Japan
[3] Kumamoto Saiseikai Hosp, Ctr Cardiovasc, Kumamoto, Japan
[4] Natl Hosp Org, Kumamoto Med Ctr, Kumamoto, Japan
[5] Fukuoka Tokushukai Hosp, Div Cardiol, Fukuoka, Japan
[6] Kumamoto Red Cross Hosp, Kumamoto, Japan
[7] Minamata City Hosp & Med Ctr, Div Cardiol, Minamata, Japan
[8] Arao City Hosp, Div Cardiol, Arao, Japan
[9] Kumamoto Rosai Hosp, Div Cardiol, Yatsushiro, Japan
[10] Shinbeppu Hosp, Div Cardiol, Beppu, Oita, Japan
[11] Miyazaki Prefectural Nobeoka Hosp, Div Cardiol, Nobeoka, Japan
[12] Hlth Insurance Yatsushiro Gen Hosp, Div Cardiol, Yatsushiro, Japan
[13] Hlth Insurance Hitoyoshi Gen Hosp, Div Cardiol, Hitoyoshi, Japan
[14] Kumamoto City Hosp, Div Cardiol, Kumamoto, Japan
[15] Amakusa Reg Med Ctr, Div Cardiol, Amakusa, Japan
[16] New Tokyo Hosp, Ctr Cardiovasc, Matsudo, Chiba, Japan