1. Department of Internal Medicine, Nippon Medical School Tama-Nagayama Hospital
2. The Second Department of Internal Medicine, University of Toyama, Graduate School of Medicine
3. Cardiology, Respiratory Medicine and Nephrology, Hirosaki University Graduate School of Medicine
4. The Cardiovascular Institute
5. Kochi Medical School Clinical Research Center, Kochi University
6. Division of Biostatistics and Clinical Epidemiology, University of Toyama, Graduate School of Medicine