1. Child and Youth Healthcare Region Västra Götaland Gothenburg Sweden
2. Clinical Sciences, Pediatrics Umeå University Umeå Sweden
3. Centre for Mother and Child Health Care Umeå Sweden
4. Child Health Services Falun Sweden
5. Sachs’ Children and Youth hospital Stockholm Sweden
6. Department of Medicine Clinical Epidemiology Unit Karolinska Institutet Stockholm Sweden
7. CHESS, Centre for Health Equity Studies Stockholm University and Karolinska Institutet Stockholm Sweden