1. Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan
2. Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
3. Department of Anatomy, St. Marianna University School of Medicine, Kanagawa, Japan
4. CMIC Company Limited, Tokyo, Japan
5. Faculty of Health and Sport Sciences, University of Tsukuba, Ibaraki, Japan
6. Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
7. JCHO Tokyo Takanawa Hospital, Tokyo, Japan