1. Division of Pediatric Emergency Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
2. Sick Kids Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
3. Section of Pediatric Emergency Medicine, Department of Pediatrics, Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
4. Section of Gastroenterology, Department of Emergency Medicine, Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
5. Department of Pediatrics, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
6. Department of Emergency Medicine, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
7. CHEO Research Institute, Ottawa, Ontario, Canada
8. Department of Pediatrics, Alberta Children’s Hospital, Calgary, Alberta, Canada
9. Department of Emergency Medicine, Alberta Children’s Hospital, Calgary, Alberta, Canada
10. Department of Physiology & Pharmacology, Alberta Children’s Hospital, Calgary, Alberta, Canada
11. Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
12. Department of Pediatric Emergency Medicine, Centre Hospitalier Universitaire Sainte-Justine, Montréal, Quebec, Canada
13. Department of Pediatrics, Université de Montréal, Montréal, Quebec, Canada
14. Department of Social and Preventive Medicine, Université de Montréal, Montréal, Quebec, Canada
15. Department of Pediatrics, Alberta Children’s Hospital, University of Calgary, Calgary, Alberta, Canada
16. Department of Emergency Medicine, Alberta Children’s Hospital, University of Calgary, Calgary, Alberta, Canada
17. Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
18. Department of Pediatrics, Stollery Children’s Hospital, University of Alberta, Edmonton, Alberta, Canada
19. Department of Emergency Medicine, Stollery Children’s Hospital, University of Alberta, Edmonton, Alberta, Canada
20. Department of Pediatrics, Clinical Research Services, Sick Kids Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
21. Division of Respiratory Medicine, Sick Kids Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
22. Division of Pediatric Emergency Medicine, British Columbia Children’s Hospital, University of British Columbia, Vancouver, British Columbia, Canada
23. Department of Pediatrics and Child Health, Division of Pediatric Emergency Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
24. Children’s Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
25. Division of Clinical Pharmacology and Toxicology, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
26. for the Pediatric Emergency Research Canada