1. Division of Cardiovascular Medicine, Jichi Medical University School of Medicine, Japan
2. Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Japan
3. Department of General Internal Medicine 3, Kawasaki Medical School, Japan
4. Department of Preventive Medicine and Epidemiologic Informatics, National Cerebral and Cardiovascular Center, Japan
5. Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Japan
6. Division of Cardiology, Iwate Medical University, Japan
7. Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Japan
8. Department of Cardiology, Hokkaido Medical Center, Japan
9. Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Japan
10. Department of Cardiology, Sakakibara Heart Institute, Japan
11. Division of Cardiology, Yokohama City University Medical Center, Japan