1. Research Unit of Population Health, University of Oulu, Oulu, Finland
2. Social and Health Services, Oulu, Finland
3. Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
4. Institute of Dentistry, University of Eastern Finland, Kuopio, Finland
5. Kuopio Research Center of Geriatric Care, University of Eastern Finland, Kuopio, Finland
6. Department of Social Pharmacy, School of Pharmacy, University of Eastern Finland, Kuopio, Finland