1. Department of NutritionHarvard T. H. Chan School of Public Health Boston MA
2. Division of Clinical NeurosciencesTurku University Hospital and University of Turku Turku Finland
3. University of Oulu, Faculty of Medicine Oulu Finland
4. Biobank Borealis of Northern FinlandOulu University Hospital Oulu Finland
5. Department of EpidemiologyHarvard T. H. Chan School of Public Health Boston MA