1. Department of Cardiology, Faculty of Medicine University of Tsukuba Tsukuba Japan
2. Department of Cardiology Nagoya City University Graduate School of Medical Sciences Nagoya Japan
3. Division of Cardiology St. Marianna Medical University Hospital Kawasaki Japan
4. Department of Cardiovascular Medicine National Cerebral and Cardiovascular Center Osaka Japan
5. Department of Cardiovascular Medicine Dokkyo Medical University Mibu Japan
6. Department of Cardiovascular Medicine Osaka University Graduate School of Medicine Suita Japan
7. Department of Cardiovascular Medicine Sakai City Hospital Organization Sakai Japan
8. Department of Cardiology Sakakibara Heart Institute Tokyo Japan
9. Division of Cardiology, Department of Internal Medicine Iwate Medical University Iwate Japan
10. Department of Cardiology and Clinical Examination, Faculty of Medicine Oita University Oita Japan
11. Department of Cardiovascular Medicine Kobe City Medical Center General Hospital Kobe Japan
12. Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan
13. Division of Cardiology Teine Keijinkai Hospital Sapporo Japan
14. Department of Cardiology Nihonkai General Hospital Yamagata Japan
15. Medical Laboratory and Blood Center Asahikawa Medical University Hospital Asahikawa Japan
16. Division of Cardiovascular Medicine, Department of Internal Medicine Jichi Medical University Tochigi Japan
17. Department of Cardiology Hiroshima City Hiroshima Citizens Hospital Hiroshima Japan
18. Department of Cardiovascular Medicine Tokushima University Hospital Tokushima Japan
19. Division of Cardiology Shimane University Faculty of Medicine Izumo Japan
20. Department of Cardiology Ise Red Cross Hospital Ise Japan