1. Geriatric Clinic, Department of Medicine, University of Helsinki, Helsinki, Finland2Institute of Health Sciences/Geriatrics, University and University Hospital of Oulu, Oulu, Finland3Helsinki University Central Hospital, Helsinki, Finland
2. Unit of Internal Medicine, North Karelia Central Hospital, Joensuu, Finland
3. Mehiläinen Airport Health Centre, Vantaa, Finland6Finnish Institute of Occupational Health, Lappeenranta, Finland