1. Department of Cardiology, Faculty of Medicine, University of Tsukuba
2. Cardiovascular Center Kindai University Hospital
3. Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
4. Department of Cardiovascular Medicine, Tokyo Medical and Dental University
5. Department of Cardiology, Tokyo Women’s Medical University
6. Department of Cardiovascular Medicine, Faculty of Medical Sciences, University of Fukui
7. Gunma Prefectural Cardiovascular Center
8. Department of Cardiology, Jikei University School of Medicine
9. Advanced Management of Cardiac Arrhythmias, Hirosaki University Graduate School of Medicine
10. Department of Clinical Pharmacology and Therapeutics, The Jikei University School of Medicine
11. Arrhythmia Center, Second Department of Internal Medicine, Kyorin University Hospital
12. Tachikawa Medical Center
13. Okayama City Hospital
14. Department of Cardiology, Graduate School of Medicine and Faculty of Medicine, Kyoto University
15. Department of Cardiology, Keio University School of Medicine
16. Tachikawa Hospital