1. Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
2. Department of Paediatrics, Royal Hobart Hospital, Hobart, Tasmania, Australia
3. Neonatal Services, Royal Women’s Hospital, Melbourne, Victoria, Australia
4. Department of Obstetrics and Gynaecology, University of Melbourne, Melbourne, Victoria, Australia
5. Clinical Epidemiology and Biostatistics Unit, Murdoch Children’s Research Institute, Melbourne, Victoria, Australia
6. Department of Neonatology, Zekai Tahir Burak Maternity Teaching Hospital, Ankara, Turkey
7. Division of Neonatology, Department of Pediatrics, Istanbul Kanuni Sultan Süleyman Training and Research Hospital, Istanbul, Turkey
8. Division of Gynaecology and Obstetrics, Department of Perinatology, University Medical Centre, Ljubljana, Slovenia
9. Division of Neonatology, Northshore University Health System, Evanston, Illinois
10. Division of Neonatology, Department of Pediatrics, Uludağ University Faculty of Medicine, Bursa, Turkey
11. Division of Neonatology, Beatrix Children’s Hospital, University Medical Center Groningen, Groningen, the Netherlands
12. Division of Neonatology, Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
13. Neonatal Services, Mercy Hospital for Women, Heidelberg, Victoria, Australia
14. Department of Obstetrics, Gynecology, and Newborn Care, The Ottawa Hospital, Ottawa, Ontario, Canada
15. Department of Pediatrics, Kapiʻolani Medical Center for Women and Children, Honolulu, Hawaiʻi
16. Department of Neonatology, KK Women’s and Children’s Hospital, Duke-NUS Medical School, Singapore
17. Neonatal Unit, Royal Hospital for Children, Glasgow, United Kingdom
18. Division of Neonatology, Department of Pediatrics, Los Angeles County + USC Medical Center and Good Samaritan Hospital, Keck School of Medicine of USC, Los Angeles, California
19. Department of Pediatrics, Children’s Regional Hospital, Cooper University Health Care, Camden, New Jersey
20. Rappaport Faculty of Medicine, Department of Neonatology, Bnai Zion Medical Center, Technion, Haifa, Israel
21. Department of Neonatal Medicine, Chelsea and Westminster Hospital NHS Foundation Trust, London, United Kingdom
22. Regional Neonatal Intensive Care Unit, University Hospital of Wales, Cardiff, United Kingdom
23. Newborn Service, Starship Child Health, Auckland Hospital, Auckland, New Zealand
24. Monash Newborn, Monash Children’s Hospital, Clayton, Victoria, Australia
25. Department of Neonatology, Singleton Hospital, Swansea, United Kingdom
26. Faculty of Medicine, Department of Neonatology, Ziv Medical Center, Bar-Ilan University, Tsfat, Israel
27. Department of Neonatology, Centenary Hospital for Women and Children, Canberra Hospital, Woden, New South Wales, Australia
28. Neonatal Intensive Care Unit, Dunedin Hospital, Dunedin, New Zealand
29. Rappaport Faculty of Medicine, Department of Neonatology, Rambam Medical Center, Technion, Haifa, Israel
30. Division of Neonatology, Royal Brisbane and Women’s Hospital, Brisbane, Queensland, Australia
31. Neonatal Intensive Care Unit, Princess Anne Hospital, Southampton, United Kingdom
32. Division of Neonatology, Peyton Manning Children’s Hospital, Ascension St Vincent, Indianapolis, Indiana
33. Neonatal Intensive Care Centre, The Royal London Hospital-Barts Health NHS Foundation Trust, London, United Kingdom
34. Division of Neonatology, Sidra Medicine, Doha, Qatar
35. Faculty of Population Health Sciences, Neonatology, EGA Institute for Women’s Health, University College London, London, United Kingdom
36. Division of Neonatal-Perinatal Medicine, Larner College of Medicine, The University of Vermont, Burlington
37. Infant Mortality and Morbidity Studies Research Group, Department of Population Health Sciences, University of Leicester, Leicester, United Kingdom
38. Clinical Sciences, Murdoch Children’s Research Institute, Melbourne, Victoria, Australia
39. Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
40. for the OPTIMIST-A Trial Investigators