1. Department of Pediatrics and
2. Maternal-Infant Care Research Centre, Mount Sinai Hospital, Toronto, Ontario, Canada;
3. Departments of Pediatrics and
4. National Research Network Japan, Department of Pediatrics, Kyorin University, Mitaka, Japan;
5. Swedish Neonatal Quality Register, Unit of Pediatrics, Department of Clinical Science, Umeå University, Umeå, Sweden;
6. Israel Neonatal Network, Gertner Institute for Epidemiology and Health Policy Research, Tel Hashomer, Israel;
7. Australian and New Zealand Neonatal Network, Department of Newborn Care, Royal Hospital for Women and School of Women’s and Children’s Health, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia;
8. Department of Pediatrics and Adolescent Medicine, Turku University Hospital and Department of Clinical Medicine, University of Turku, Turku, Finland;
9. United Kingdom Neonatal Collaborative, Neonatal Data Analysis Unit, Section of Neonatal Medicine, Department of Medicine, Imperial College London and Chelsea and Westminster Hospital, London, United Kingdom;
10. Spanish Neonatal Network, Health Research Institute La Fe, Avenida Fernando Abril Martorell, Valencia, Spain;
11. Swiss Neonatal Network, Department of Neonatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland;
12. TIN Toscane Online, Unit of Epidemiology, Meyer Children’s University Hospital, Regional Health Agency, Florence, Italy;
13. Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden;
14. Department of Neonatal Medicine, Karolinska University Hospital, Stockholm, Sweden;
15. Department of Paediatrics, University of Otago, Christchurch, Canterbury, New Zealand;
16. Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada; and
17. Division of Neonatology, National Center for Child Health and Development, Tokyo, Japan
18. Obstetrics and Gynecology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada;