1. Institute of Clinical Medicine, Neurology, University of Eastern Finland, Kuopio, Finland
2. VTT Technical Research Centre of Finland, Tampere, Finland
3. Combinostics, Tampere, Finland
4. Department of Neurology, Kuopio University Hospital, Kuopio, Finland
5. Chronic Disease Prevention Unit, National Institute for Health and Welfare, Helsinki, Finland
6. Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
7. Hospital District of North Karelia, Joensuu, Finland
8. Division of Clinical Geriatrics, Center for Alzheimer Research, Karolinska Institutet, Stockholm, Sweden