1. Division of Intramural Population Health Research; National Institutes of Health; Eunice Kennedy Shriver National Institute of Child Health and Human Development; Bethesda MD USA
2. Northern Finland Laboratory Center NordLab; Oulu University and Oulu University Hospital; Oulu Finland
3. Wadsworth Center; New York State Department of Health; Albany NY USA
4. Biobank Borealis of Northern Finland; Oulu University Hospital; Oulu Finland
5. Faculty of Medicine; University of Oulu; Oulu Finland
6. National Institute of Health and Welfare; Helsinki Finland
7. Karolinska Institute; Stockholm Sweden