1Department of Psychiatry, University of Oulu, Finland
2Department of Public Health and General Practice, Division of Geriatrics, University of Kuopio, Municipal Hospitals of Kuopio, Finland
3Research and Development Centre of the Social Insurance Institution, Helsinki, Finland
4Department of Psychiatry, University of Oulu, Department of Psychiatry, Hospital District of Lapland, Rovaniemi, Finland
5Institute of Clinical Medicine, General Practice, University of Turku, Satakunta Central Hospital, Pori, Finland
6Institute of Clinical Medicine, General Practice, University of Turku, Härkätie Health Center, Lieto, Finland