1. Emergency Department; Perth Children's Hospital; Perth Western Australia Australia
2. School of Nursing, Midwifery and Paramedicine, Faculty of Health Sciences; Curtin University; Perth Western Australia Australia
3. Emergency Department; Monash Medical Centre; Melbourne Victoria Australia
4. School of Clinical Sciences, Monash University; Melbourne Victoria Australia
5. Emergency Department; Royal Children's Hospital; Melbourne Victoria Australia
6. Emergency Research; Murdoch Children's Research Institute; Melbourne Victoria Australia
7. Department of Paediatrics; University of Melbourne; Melbourne Victoria Australia
8. Division of Paediatric and Emergency Medicine; School of Medicine, University of Western Australia; Perth Western Australia Australia
9. Paediatric Emergency Medicine Centre of Research Excellence; Murdoch Children's Research Institute; Melbourne Victoria Australia
10. Children's Emergency Department; Starship Children's Hospital; Auckland New Zealand
11. Department of Surgery, Child and Youth Health; The University of Auckland; Auckland New Zealand
12. Department of Paediatrics; Child and Youth Health, The University of Auckland; Auckland New Zealand