1. Research Team for Social Participation and Community Health; Tokyo Metropolitan Institute of Gerontology; Tokyo Japan
2. Research Team for Promoting Independence of the Elderly; Tokyo Metropolitan Institute of Gerontology; Tokyo Japan
3. Research Team for Human Care; Tokyo Metropolitan Institute of Gerontology; Tokyo Japan
4. Graduate School of University of Human Arts and Sciences; Saitama Japan
5. Graduate School of Gerontology; J.F. Oberlin University; Tokyo Japan
6. School of Health Sciences; Sapporo Medical University; Sapporo Japan
7. National Center for Geriatrics and Gerontology; Obu Japan