1. Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
2. Makurazaki Municipal Hospital, Kagoshima, Japan
3. Department of Cardiology, Tarumizu Chuo Hospital, Tarumizu Municipal Medical Center, Kagoshima, Japan
4. Department of Cardiology, Nanpuh Hospital, Kagoshima, Japan
5. Department of Cardiology, Tanegashima Medical Center, Kagoshima, Japan
6. Department of Cardiology, Komaki Clinic, Kagoshima, Japan
7. Togo Clinic, Kagoshima, Japan
8. Department of Cardiology, Ichihino Memorial Hospital, Kagoshima, Japan