1. Institute of Dentistry University of Eastern Finland Kuopio Finland
2. Department of Oral and Maxillofacial Surgery Kuopio University Hospital Kuopio 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