1. Department of Public Health Solutions Finnish Institute for Health and Welfare Helsinki Finland
2. Department of Psychiatry and SleepWell Research Program Faculty of Medicine University of Helsinki and Helsinki University Central Hospital Helsinki Finland
3. Department of Social Sciences University of Eastern Finland Kuopio Finland
4. Institute for Mental Health School of Psychology University of Birmingham Birmingham UK
5. Estonian Genome Center, Institute of Genomics University of Tartu Tartu Estonia
6. Institute of Biomedicine/Physiology University of Helsinki Helsinki Finland
7. Tampere Center for Child Health Research Tampere University and Tampere University Hospital Tampere Finland
8. Psychology Faculty of Social Sciences Tampere University Tampere Finland
9. Pediatric Research Center Child Psychiatry University of Helsinki and Helsinki University Hospital Helsinki Finland