1. Departments of Pediatrics and
2. Department of Public Health, University of Turku, Turku, Finland;
3. Child Psychiatry, Turku University Hospital, Turku, Finland;
4. Department of Pediatric Neurology and
5. Turku Clinical Research Centre, University of Turku and Turku University Hospital, Turku, Finland; and
6. Child and Adolescent Clinic, Turku City Hospital, Turku, Finland