1. Second Department of Internal Medicine, University of Toyama, Toyama 930-0194, Japan
2. Department of Cardiology, Kurashiki Central Hospital, Kurashiki 710-0052, Japan
3. Department of Cardiology, Toyohashi Heart Center, Toyohashi 441-8071, Japan
4. Department of Cardiology, Nagoya Heart Center, Nagoya 461-0045, Japan
5. Department of Cardiology, Gifu Heart Center, Gifu 500-8384, Japan
6. Department of Cardiology, Sakakibara Heart Institute, Tokyo 183-0003, Japan
7. Division of Cardiovascular Medicine, Department of Internal Medicine, Faculty of Medicine, Toho University, Tokyo 143-8540, Japan
8. Division of Cardiology, Mitsui Memorial Hospital, Tokyo 101-8643, Japan
9. Department of Cardiology, Sendai Kosei Hospital, Sendai 980-0873, Japan
10. Division of Cardiology, Kokura Memorial Hospital, Kitakyushu 802-8555, Japan
11. Division of Cardiology, St. Marianna University School of Medicine Hospital, Kawasaki 216-8511, Japan
12. Department of Cardiology, Shonan Kamakura General Hospital, Kanagawa 247-8533, Japan
13. Department of Cardiology, School of Medicine, Teikyo University, Tokyo 173-8606, Japan
14. Department of Cardiology, National Cerebral and Cardiovascular Center, Suita 564-8565, Japan
15. Division of Cardiology, Saiseikai Kumamoto Hospital Cardiovascular Center, Kumamoto 861-4193, Japan
16. Department of Cardiology, Tokyo Woman’s Medical University, Tokyo 162-8666, Japan
17. Division of Cardiology, Department of Internal Medicine, Iwate Medical University, Iwate 028-3694, Japan
18. Department of Cardiology, New Tokyo Hospital, Chiba 270-2232, Japan
19. Department of Cardiology, Sapporo Higashi Tokushukai Hospital, Sapporo 065-0033, Japan
20. Department of Cardiology, School of Medicine, Tokai University, Isehara 259-1193, Japan
21. Department of Cardiology, Saiseikai Yokohama City Eastern Hospital, Kanagawa 230-0012, Japan
22. Division of Cardiology, Department of Medicine, Faculty of Medicine, Kinki University, Osaka 577-8502, Japan
23. Department of Hygiene and Public Health, Nippon Medical School, Tokyo 113-8602, Japan
24. Department of Cardiology, School of Medicine, Keio University, Tokyo 160-8582, Japan