1. Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Osaka University Graduate School of Dentistry; Osaka Japan
2. Department of Clinical Thanatology and Geriatric Behavioral Science; Osaka University Graduate School of Human Sciences; Osaka Japan
3. Tokyo Metropolitan Institute of Gerontology; Tokyo Japan
4. Osaka University Graduate School of Allied Health Sciences; Osaka Japan
5. Osaka University Graduate School of Medicine; Osaka Japan
6. Center for Supercentenarian Medical Research; Keio University School of Medicine; Tokyo Japan