1. Sachs' Children and Youth Hospital, Södersjukhuset Stockholm Sweden
2. Department of Child Neurology, Astrid Lindgren Children's Hospital, Karolinska University Hospital Stockholm Sweden
3. Division of Clinical Epidemiology, Department of Medicine Solna Karolinska Institutet Stockholm Sweden
4. Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
5. CHU Lille, Paediatric and Neonatal Intensive Care Transport Unit, Department of Emergency Medicine, SAMU 59 Lille University Hospital Lille France
6. Department of Clinical Science and Education Södersjukhuset Karolinska Institutet Stockholm Sweden