| Affiliation: | 1. Research Unit of Clinical Neuroscience, Faculty of Medicine, University of Oulu, Oulu, Finland;2. Department of Psychiatry, Lapland Hospital District, Rovaniemi, Finland;3. Department of Laboratory Medicine and Medical Research Unit, Sein?joki Central Hospital, Sein?joki, Finland;4. University of Tampere, Sein?joki, Finland;5. Finnish Register of Congenital Malformations, National Institute for Health and Welfare, Helsinki, Finland;6. National Institute for Health and Welfare, Helsinki, Finland;7. Nordic School of Public Health, Gothenburg, Sweden;8. Department of Health Protection, National Institute of Health and Welfare, Oulu, Finland;9. Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts |
