1. Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University
2. Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine
3. Department of Cardiovascular and Respiratory Medicine, Shiga University of Medical Science
4. Department of Cardiovascular Medicine, Jichi Medical University
5. Department of Cardiology, Tokyo Metropolitan Hiroo Hospital
6. Division of Cardiovascular Medicine, Toho University Ohashi Medical Center
7. Department of Pharmacology, St. Marianna University School of Medicine
8. Cardiac Rhythm Disease Management, Medtronic Japan Co, Ltd