1. Division of Paediatric Emergency Medicine and
2. The Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, Ontario, Canada;
3. University of Toronto, Toronto, Ontario, Canada;
4. Emergency Department, Royal Children’s Hospital, Murdoch Children’s Research Institute, and University of Melbourne, Melbourne, Australia;
5. Emergency Department, Starship Children’s Hospital, and University of Auckland, Auckland, New Zealand;
6. Sections of Pediatric Emergency Medicine,
7. Gastroenterology,
8. Pediatric Emergency Medicine, Baylor College of Medicine and Texas Children’s Hospital, Houston, Texas;
9. Section of Pediatric Emergency Medicine, Hasbro Children’s Hospital and Section of Pediatric Emergency Medicine, Rhode Island Hospital, Providence, Rhode Island;
10. Department of Pediatrics, Hospital de Santa Maria and Laboratory of Clinical Pharmacology and Therapeutics, Faculty of Medicine, Instituto de Medicina Molecular, University of Lisbon, Lisbon, Portugal;
11. Division of Pediatric Emergency Medicine, University of Ottawa and Children’s Hospital of Eastern Ontario, Ottawa, Ontario, Canada;
12. Division of Emergency Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio;
13. Pediatric Emergency Department, Bristol Royal Hospital for Children and Faculty of Health and Life Sciences, University of the West of England, Bristol, United Kingdom;
14. Emergency Medicine, and
15. Physiology and Pharmacology, Department of Pediatrics, Alberta Children’s Hospital Research Institute and Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada;
16. Centre hospitalier universitaire Sainte-Justine, University of Montreal, Montreal, Quebec, Canada;
17. Pediatric Emergency Medicine, School of Medicine, Washington University in St Louis, St Louis, Missouri;
18. Manitoba Institute of Child Health, University of Manitoba, Winnipeg, Manitoba, Canada;
19. Department of Pediatrics, Children’s Hospital Colorado, Aurora, Colorado;
20. Pediatric Emergency Department, Cruces University Hospital, Barakaldo, Bizkaia, Spain;
21. Emergency Department, Children’s Hospital of Minnesota, Minneapolis, Minnesota; and
22. Departments of Emergency Medicine and
23. Pediatrics, Davis School of Medicine, University of California, Sacramento, California