1. Department of Internal Medicine, University of Toyama
2. Department of Internal Medicine, Tokai University
3. Department of Biostatistics, University of Toyama
4. Department of Cardiology, Jichi Medical University
5. Department of Neurology, Tokyo Women's Medical University
6. Department of Cardiology, Sunagawa City Medical Center
7. Institute for Clinical Research, Osaka National Hospital
8. Department of Cardiology, Saiseikai Yamaguchi Hospital
9. Department of Cardiology, Hakodate Medical Association Hospital
10. Sasagawa Clinic
11. Medical & Biological Science, Gunma University
12. Department of Internal Medicine, Keio University