1. Division of Cardiovascular Medicine, Department of Internal Medicine Kobe University Graduate School of Medicine Kobe Japan
2. Second Department of Internal Medicine University of Occupational and Environmental Health, School of Medicine Kitakyusyu Japan
3. Division of Cardiology Showa University Fujigaoka Hospital Yokohama Japan
4. Division of Cardiology Kobe Century Memorial Hospital Kobe Japan
5. Division of Cardiology Medical Corporation Kawasaki Hospital Kobe Japan
6. Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan
7. Department of Cardiovascular Medicine Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
8. Division of Cardiology, Department of Medicine II Kansai Medical University Hirakata Japan
9. Department of Cardiology Hiratsuka Kyosai Hospital Hiratsuka Japan
10. Division of Cardiology Yokohama City University Medical Center Yokohama Japan
11. Department of Laboratory and Transfusion Medicine Hospital of University of Occupational and Environmental Health, School of Medicine Kitakyushu Japan
12. Division of Cardiology Saiseikai Senri Hospital Osaka Japan