1. Institute of Clinical Medicine; Internal Medicine; University of Eastern Finland; P.O. Box 1627 Kuopio 70211 Finland
2. Institute of Biomedicine; University of Eastern Finland; Yliopistonranta 1 E, P.O. Box 1627 Kuopio 70211 Finland
3. Department of Neurology; Institute of Clinical Medicine; University of Eastern Finland; P.O. Box 1627 Kuopio 70211 Finland
4. Division of Clinical Geriatrics; Center for Alzheimer Research; NVS, Karolinska Institutet; Novum 5th floor Huddinge 14157 Sweden
5. A.I Virtanen Institute for Molecular Sciences; University of Eastern Finland; Neulaniementie 2 Kuopio 70211 Finland
6. Neurocenter; Neurology; Kuopio University Hospital; Kuopio Finland
7. Kuopio University Hospital; Kuopio Finland
8. Department of Public Health Solutions; Public Health Promotion Unit; National Institute for Health and Welfare; PO Box 30 Helsinki 00271 Finland