1. Bunkyo Gakuin University Fujimino Japan
2. Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute for Geriatrics and Gerontology Tokyo Japan
3. Research Team for Human Care, Tokyo Metropolitan Institute for Geriatrics and Gerontology Tokyo Japan
4. Division of Preventive Dentistry, Department of Oral Health Science, Graduate School of Dental Medicine Hokkaido University Sapporo Japan
5. Integrated Research Initiative for Living Well with Dementia, Tokyo Metropolitan Institute for Geriatrics and Gerontology Tokyo Japan