1. Niigata University Health Administration Center, Japan
2. Division of Clinical Nephrology and Rheumatology, Niigata University Graduate School of Medical and Dental Sciences, Japan
3. Department of Health and Nutrition, Faculty of Human Life Studies, University of Niigata Prefecture, Japan
4. Department of Internal Medicine, Nagaoka Red Cross Hospital, Japan
5. Department of Medical Technology, School of Health Sciences, Faculty of Medicine, Niigata University, Japan