1. Clinical Sciences, Murdoch Children’s Research Institute, Melbourne, Victoria, Australia;
2. Departments of Paediatrics and
3. Emergency Department, Perth Children’s Hospital, Perth, Western Australia, Australia;
4. School of Medicine, Divisions of Emergency Medicine and Paediatrics, University of Western Australia, Perth, Western Australia, Australia;
5. Emergency Department, Women’s & Children’s Hospital, Adelaide, South Australia, Australia;
6. Department of Acute Care Medicine, University of Adelaide, South Australia, Australia;
7. Emergency Department, Queensland Children’s Hospital, Brisbane, Queensland, Australia;
8. Child Health Research Centre, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia;
9. Emergency Department, The Children’s Hospital at Westmead, Sydney, New South Wales, Australia;
10. Emergency Department, The Royal Children’s Hospital, Melbourne, Victoria, Australia;
11. Emergency Department, Monash Medical Centre, Melbourne, Victoria, Australia;
12. Emergency Department, The Townsville Hospital, Townsville, Queensland, Australia;
13. Emergency Department, University Hospital Geelong, Victoria, Australia;
14. School of Medicine, Faculty of Health, Deakin University, Geelong, Victoria, Australia;
15. Emergency Department, Kidz First Middlemore Hospital, Auckland, New Zealand;
16. Department of Neurosurgery, Austin and Cabrini Hospitals, Melbourne, Victoria, Australia;
17. School of Psychological Sciences, University of Melbourne, Victoria, Australia;
18. Psychology Service, Royal Children’s Hospital, Melbourne, Victoria, Australia;
19. Emergency Department, Starship Children’s Health, Auckland, New Zealand; and
20. Departments of Surgery and Paediatrics: Child and Youth Health, University of Auckland, New Zealand
21. Critical Care, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Victoria, Australia;