1. Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine
2. Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital
3. Faculty of Health Sciences, Hokkaido University
4. Department of Cardiovascular Medicine, Tokushima University Hospital
5. Department of Cardiology and Nephrology, Mie University Graduate School of Medicine
6. Cardiovascular Division, Faculty of Medicine, University of Tsukuba
7. Department of Cardio-Renal Medicine and Hypertension, Nagoya City University Graduate School of Medical Sciences