| Affiliation: | 1. Department of Laboratory Medicine and Medical Research Unit, Sein?joki Central Hospital, University of Tampere, Sein?joki, Finland;2. Research Unit of Clinical Neuroscience, Faculty of Medicine, University of Oulu, Oulu, Finland;3. Department of Psychiatry, Lapland Hospital District, Rovaniemi, Finland;4. Information Services Department, Finnish Register of Congenital Malformations, National Institute for Health and Welfare, Helsinki, Finland;5. Information Services Department, National Institute for Health and Welfare, Helsinki, Finland;6. Division of Family Medicine, Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Stockholm, Sweden;7. The Impact Assessment Unit, National Institute of Health and Welfare, Oulu, Finland;8. The Children, Adolescents and Families Unit, National Institute for Health and Welfare, Oulu, Finland;9. PEDEGO Research Unit, Medical Research Center Oulu, Oulu University Hospital, University of Oulu, Oulu, Finland;10. Chronic Disease Prevention Unit, National Institute for Health and Welfare, Helsinki and Oulu, Finland;11. Children's Hospital, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland;12. Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts |
