1. Institute of Dentistry, School of Medicine, Faculty of Health Sciences University of Eastern Finland Kuopio Finland
2. Social and Health Services City of Espoo Espoo Finland
3. Kuopio Research Centre of Geriatric Care, School of Pharmacy, Faculty of Health Sciences University of Eastern Finland Kuopio Finland
4. Institute of Public Health and Clinical Nutrition, Faculty of Health Sciences University of Eastern Finland Kuopio Finland
5. Department of Oral and Maxillofacial Surgery University Hospital Kuopio Kuopio Finland