1. Division of Statistics and Data Science, Liaison Center for Innovative Dentistry Tohoku University Graduate School of Dentistry Sendai Japan
2. Department of International and Community Oral Health Tohoku University Graduate School of Dentistry Sendai Japan
3. Frontier Research Institute for Interdisciplinary Sciences Tohoku University Sendai Japan
4. Department of Oral Health Promotion, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
5. Division of Public Health Kitasato University, School of Medicine Sagamihara Japan
6. Department of Social and Preventive Epidemiology, School of Public Health University of Tokyo Tokyo Japan
7. Department of Social Preventive Medical Sciences, Center for Preventive Medical Sciences Chiba University Chiba Japan
8. Department of Gerontological Evaluation, Center for Gerontology and Social Science Research Institute, National Center for Geriatrics and Gerontology Obu Japan