1. Gerodontology and Oral RehabilitationGraduate School of Medical and Dental SciencesTokyo Medical and Dental University Tokyo Japan
2. Department of Advanced ProsthodonticsHiroshima University Institute of Biomedical and Health Sciences Hiroshima Japan
3. Department of Prosthodontics, Gerodontology and Oral RehabilitationOsaka University Graduate School of Dentistry Suita Japan
4. Department of Removable Prosthodontics & GerodontologyTokyo Dental College Tokyo Japan
5. Tama Oral Rehabilitation ClinicThe Nippon Dental University Tokyo Japan
6. Department of Oral & Maxillofacial ProsthodonticsInstitute of Biomedical SciencesTokushima University Graduate School Tokushima Japan
7. Department of Oral Health Sciences for Community WelfareGraduate School of Medical and Dental SciencesTokyo Medical and Dental University Tokyo Japan
8. Department of Dentistry and Oral‐Maxillofacial SurgerySchool of MedicineFujita Health University Toyoake Japan
9. Department of Community DentistryTsurumi University School of Dental Medicine Yokohama Japan
10. Research on Social and Human SciencesTokyo Metropolitan Institute of Gerontology Tokyo Japan
11. Dentistry and Oral SurgeryTokyo Metropolitan Institute of Gerontology Tokyo Japan
12. Division of Clinical Oral RehabilitationThe Nippon Dental University Graduate School of Life Dentistry at Tokyo Tokyo Japan