[1] Miyoshi Cent Hosp, Dept Cardiol, 531 Higashi Sakeya Cho, Miyoshi City, Hiroshima 7288502, Japan
[2] Hiroshima Red Cross Hosp, Dept Cardiol, Hiroshima, Japan
[3] Atom Bomb Survivors Hosp, Hiroshima, Japan
[4] Hiroshima Univ, Grad Sch Biomed & Hlth Sci, Dept Cardiovasc Med, Hiroshima, Japan