Research Centre of Geriatric Care, University of Eastern Finland, Kuopio, Finland Faculty of Health Sciences, Clinical Pharmacology and Geriatric Pharmacotherapy Unit, School of Pharmacy, University of Eastern Finland, Kuopio, Finland Social and Health Centre of Kuopio, Kuopio, Finland Department of Periodontology, Institute of Dentistry, University of Oulu, Finland Oulu Health Centre, Oulu, Finland Oral and Maxillofacial Department, Oulu University Hospital, Oulu, Finland Faculty of Health Sciences, Division of Geriatrics, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland Leppävirta Health Centre, Leppävirta, Finland.