1. Periodontology and Geriatric Dentistry; Center of Oral Health Sciences Research; University of Oulu; Oulu Finland
2. Dental Training Clinic; Social and Health services; Oulu Finland
3. Medical Research Center Oulu; Oulu University Hospital and University of Oulu; Oulu Finland
4. School of Pharmacy; University of Eastern Finland; Kuopio Finland
5. Social and Health Centre of Kuopio; Kuopio Finland
6. Department of Social Pharmacy; School of Pharmacy; University of Eastern Finland; Kuopio Finland
7. Unit of Clinical Pharmacology and Geriatric Pharmacotherapy; School of Pharmacy; University of Eastern Finland; Kuopio Finland
8. Institute of Dentistry; University of Eastern Finland; Kuopio Finland
9. Department of Oral and Maxillofacial Diseases; Kuopio University Hospital; Kuopio Finland