1. Department of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine, Japan
2. Department of Kidney Disease and Hypertension, Osaka General Medical Center, Japan
3. Clinical Laboratory Medicine, Osaka General Medical Center, Japan
4. Health Care Center, Osaka University, Japan
5. Division of Nephrology, Department of Internal Medicine, Osaka Rosai Hospital, Japan
6. Department of Comprehensive Kidney Disease Research, Osaka University Graduate School of Medicine, Japan