1. Department of Public Health; University of Turku; Turku Finland
2. Oral Health Care; City of Turku Welfare Division; Turku Finland
3. Turku Clinical Research Centre; Turku University Hospital; Turku Finland
4. Department of Child Neurology; University of Turku; Turku Finland
5. Department of General Practice; University of Turku; Turku Finland
6. Department of Community Dentistry; Institute of Dentistry; University of Turku; Turku Finland
7. Finn Brain Study Group; Department of Psychiatry and Turku Brain and Mind Center; University of Turku; Turku Finland
8. Department of Teacher Education; University of Turku; Turku Finland
9. Child and Adolescent Clinic; City of Turku Welfare Division; Turku Finland