1. Department of Internal Medicine, Division of Cardio-Vascular Medicine, Kurume University School of Medicine, Kurume, Japan
2. Department of Cardiology, Kurume University Medical Center, Kurume, Japan
3. Department of Cardiology, University of Washington, Seattle, WA, USA
4. Department of Cerebrovascular Medicine, St. Mary’s Hospital, Kurume, Japan
5. Fukuoka International College of Health and Welfare, Fukuoka, Japan.