1. Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
2. Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
3. Department of Neurosciences, University of Helsinki, Helsinki, Finland
4. Internal medicine and rehabilitation, Division of Geriatrics, Helsinki University Hospital Helsinki, Finland
5. Population health unit, Finnish Institute for Health and Welfare, Helsinki, Finland
6. Department of Social Services and Health Care, Oral Health Care, Helsinki, Finland
7. Department of General Practice and Primary Health Care, University of Helsinki, Helsinki, Finland
8. Unit of Primary Health Care, Helsinki University Hospital, Helsinki, Finland
9. Division of Clinical Geriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden
10. Theme Inflammation and Aging, Karolinska University Hospital, Huddinge, Sweden
11. School of Medicine, Institute of Dentistry, University of Eastern Finland, Kuopio, Finland
12. Oral and Maxillofacial Diseases, Kuopio University Hospital, Kuopio, Finland