1. Department of Diabetes, Metabolism and Endocrinology; Tokyo Metropolitan Geriatric Hospital; Tokyo Japan
2. Department of Geriatric Medicine; Kanazawa Medical University; Ishikawa Japan
3. Department of Geriatric Medicine; The University of Tokyo; Tokyo Japan
4. Department of Geriatric Medicine; Kyorin University School of Medicine; Tokyo Japan
5. Departments of Rehabilitation Medicine; Toho University Graduate School of Medicine; Tokyo Japan
6. Department of Geriatric Medicine; Tokyo Medical University; Tokyo Japan
7. Department of Geriatric Medicine and Neuroimaging; Tohoku University Hospital; Miyagi Japan
8. Department of Community Healthcare & Geriatrics; Nagoya University Graduate School of Medicine; Aichi Japan
9. Institute of Gerontology; The University of Tokyo; Tokyo Japan
10. National Center for Geriatrics and Gerontology; Aichi Japan
11. Institute of Gerontology, J.F. Oberlin University; Tokyo Japan
12. Department of Geriatric and General Medicine; Osaka University Graduate School of Medicine; Osaka Japan
13. Department of Medicine, Division of Diabetes, Metabolism and Endocrinology; Chiba University Hospital; Chiba Japan
14. Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology; Tokyo Japan