1. Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine
2. Department of Cardiovascular Medicine, Tohoku University Hospital
3. Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine
4. Department of Preventive Medicine and Public Health, Keio University School of Medicine
5. Nippon Medical School Hospital
6. Department of Research and Development, Tachikawa Medical Center
7. Okayama City Hospital
8. Department of Internal Medicine, Faculty of Medicine, Kindai University