1. Department of Paediatrics and Adolescent Medicine Turku University Hospital and University of Turku Turku Finland
2. Department of Social Medicine Neonatal Research Network Japan National Center for Child Health and Development Tokyo Japan
3. Neonatal Research Network Japan Maternal and Perinatal Center Tokyo Women's Medical University Tokyo Japan
4. Department of Paediatrics Mount Sinai Hospital and University of Toronto Toronto Canada
5. Maternal‐Infant Care Research Centre Mount Sinai Hospital Toronto Canada
6. Department of Neonatal Medicine Karolinska University Hospital and Karolinska Institutet Stockholm Sweden
7. Gertner Institute for Epidemiology and Health Policy Research Sheba Medical Centre Tel Hashomer Israel
8. Department of Paediatrics University of Otago Christchurch New Zealand
9. Illinois Neonatal Network Saint Louis IL USA
10. Department of Neonatology University Hospital Zurich University of Zurich Zurich Switzerland
11. Department of Clinical Sciences/Pediatrics Umeå University Hospital Umeå Sweden
12. Division of Neonatology National Center for Child Health and Development Tokyo Japan
13. Neonatal Intensive Care Unit Anna Meyer Children’s University Hospital Florence Italy
14. Department of Obstetrics and Gynecology and Dalla Lana School of Public Health University of Toronto Toronto Canada
15. Division of Neonatology and Health Research Institute La Fe Valencia Spain
16. Royal Hospital for Women National Perinatal Epidemiology and Statistic Unit University of New South Wales Randwick NSW Australia