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