1. Division of Cardiology Department of Internal Medicine The Jikei University School of Medicine Tokyo Japan
2. Cardiovascular Center Sakurabashi Watanabe Hospital Osaka Japan
3. Department of Cardiovascular Medicine National Cerebral and Cardiovascular Center Suita Japan
4. Department of Preventive Medicine and Epidemiologic Informatics National Cerebral and Cardiovascular Center Suita Japan
5. Center for Cerebral and Cardiovascular Disease Information National Cerebral and Cardiovascular Center Suita Japan
6. Heart Rhythm Center Tokyo Medical and Dental University Tokyo Japan
7. Heart Rhythm Center Chiba‐Nishi General Hospital Matsudo Japan
8. Department of Cardiology Tokyo Women's Medical University Tokyo Japan
9. Fourth Department of Internal Medicine Teikyo University School of Medicine Kawasaki Japan
10. Department of Cardiology Faculty of Medicine University of Tsukuba Tsukuba Japan