1. Institute of Clinical Medicine/Neurology, University of Eastern Finland, Kuopio, Finland
2. Aging Research Center, Karolinska Institutet, Stockholm University, Stockholm, Sweden
3. Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences, and Society, Karolinska Institutet, Stockholm, Sweden
4. Chronic Disease Prevention Unit, National Institute for Health and Welfare, Helsinki, Finland
5. Institute of Health Sciences/Geriatrics, University of Oulu and Oulu University Hospital, Oulu, Finland
6. Medical Research Center Oulu, Oulu University Hospital and Oulu City Hospital, Oulu, Finland
7. Department of Neurology, Kuopio University Hospital, Kuopio, Finland
8. Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
9. Hospital District of North Karelia, Joensuu, Finland
10. Department of Public Health, Faculty of Medicine, University of Helsinki, Helskinki, Finland
11. Finnish Institute of Occupational Health, Helsinki, Finland
12. Welfare and Health Promotion Unit, National Institute for Health and Welfare, Helsinki, Finland
13. Department of Social and Psychological Studies, Karlstad University, Karlstad, Sweden
14. Department of Psychology, Umeå University, Umeå, Sweden
15. Department of Medicine, Geriatric Clinic, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
16. Department of Public Health, University of Helsinki, Helsinki, Finland
17. South Ostrobothnia Central Hospital, Seinäjoki, Finland
18. Department of Neurosciences and Preventive Medicine, Danube-University Krems, Krems, Austria
19. Diabetes Research Group, King Abdulaziz University, Jeddah, Saudi Arabia
20. Neuroepidemiology and Ageing Research Unit, School of Public Health, Imperial College London, London, United Kingdom