1. Department of Paediatrics Innlandet Hospital Trust Lillehammer Norway
2. Department of Clinical Medicine University of Oslo Norway
3. Department of Paediatrics Oslo University Hospital Oslo Norway
4. Department of Health Registries Norwegian Institute of Public Health Norway
5. Department of Clinical Science University of Bergen Bergen Norway
6. Department of Paediatrics Haukeland University Hospital Bergen Norway
7. Norwegian Centre for Violence and Traumatic Stress Studies Oslo Norway
8. Regional Centre for Child and Adolescent Mental Health Eastern and Southern Norway Oslo Norway
9. Department of Research Innlandet Hospital Trust Brumunddal Norway
10. Department of Public Health Science Inland Norway University Elverum Norway