1. Department of Clinical Science, Intervention and Technology Karolinska Institutet Stockholm Sweden
2. Department of Neonatal Medicine Karolinska University Hospital Stockholm Sweden
3. The Danish Clinical Quality Program – National Clinical Registries (RKKP) Aarhus Denmark
4. Department of Paediatrics Aarhus University Hospital Aarhus Denmark
5. Department of Neonatal Intensive Care, Clinic of Paediatric and Adolescent Medicine Oslo University Hospital Oslo Norway
6. Department of Neonatal Medicine, Children's Hospital Iceland Landspitali University Hospital Reykjavík Iceland
7. Department of Paediatrics and Adolescent Medicine Turku University Hospital Turku Finland
8. Department of Clinical Medicine University of Turku Turku Finland
9. Department of Obstetrics and Gynaecology Aalborg University Hospital Thisted Denmark
10. Department of Clinical Sciences, Paediatrics Umeå University Umeå Sweden
11. Department of Knowledge Brokers THL Finnish Institute for Health and Welfare Helsinki Finland
12. Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
13. Paediatric Research Group, Faculty of Health Sciences UiT‐The Arctic University of Norway Tromsø Norway
14. Department of Paediatrics and Adolescence Medicine University Hospital of North Norway Tromsø Norway
15. Department of Paediatrics, New Children's Hospital, Paediatric Research Center University of Helsinki and Helsinki University Hospital Helsinki Finland
16. Medical Faculty, Institute for Clinical Medicine University of Oslo Oslo Norway
17. Department of Intensive Care of Newborns and Small Children University Hospital of Copenhagen Copenhagen Denmark