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