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