1. Research Team for Social Participation and Community Health Tokyo Metropolitan Institute of Gerontology Tokyo Japan
2. Research Team for Promoting Independence and Mental Health Tokyo Metropolitan Institute of Gerontology Tokyo Japan
3. Department of Radiology Tokyo Metropolitan Geriatric Hospital Tokyo Japan
4. Department of Radiology National Center for Geriatrics and Gerontology Obu Japan
5. Center for Clinical Epidemiology and Health Technology Assessment St. Luke's International University Tokyo Japan
6. Gerodontology, Department of Oral Health Science, Faculty of Dental Medicine Hokkaido University Sapporo Japan