1. Department of Pediatrics, Schulich School of Medicine and Dentistry, London, Canada
2. Department of Internal Medicine, Schulich School of Medicine and Dentistry, London, Canada
3. Department of Epidemiology & Biostatistics, Schulich School of Medicine and Dentistry, London, Canada
4. Children's Health Research Institute, London Health Sciences Centre, London, Canada
5. Division of Emergency Medicine, Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
6. Division of Emergency Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
7. Department of Pediatrics, University of Utah, Salt Lake City
8. Department of Emergency Medicine, Columbia University College of Physicians & Surgeons, New York, New York
9. Division of Gastroenterology, Hepatology, & Nutrition, Department of Pediatrics, Washington University in St Louis School of Medicine, St Louis, Missouri
10. Division of Emergency Medicine, Department of Pediatrics, Children’s Hospital of Michigan, Detroit
11. Wayne State University, Detroit, Michigan
12. Department of Emergency Medicine, University of Michigan, Ann Arbor
13. Division of Pediatric Emergency Medicine, The Hospital for Sick Children, SickKids Research Institute, Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
14. Department of Emergency Medicine, IWK Health Centre, Halifax, Nova Scotia, Canada
15. Department of Pediatric Emergency Medicine, Université de Montréal, Montréal, Quebec, Canada
16. Department of Pediatrics, Université de Montréal, Montréal, Quebec, Canada
17. Department of Pediatrics, University of California, Davis, School of Medicine, Sacramento
18. Department of Emergency Medicine, University of California, Davis, School of Medicine, Sacramento
19. Department of Pediatrics, University of Ottawa, Ottawa, Ontario, Canada
20. Department of Emergency Medicine, University of Ottawa, Ottawa, Ontario, Canada
21. Pediatric Emergency Department, Children’s Hospital of Eastern Ontario, Ottawa, Ontario, Canada
22. Department of Emergency Medicine, University of New Mexico, Albuquerque
23. Division of Emergency Medicine, Children's National Hospital, Department of Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington, DC
24. Department of Emergency Medicine, Rhode Island Hospital/Hasbro Children's Hospital and Brown University, Providence
25. Division of Emergency Medicine, Cincinnati Children's Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
26. Sections of Pediatric Emergency Medicine and Gastroenterology, Department of Pediatric Medicine, Alberta Children’s Hospital, Alberta, Canada
27. Section of Pediatric Emergency Medicine, Department of Emergency Medicine, Alberta Children’s Hospital, Alberta, Canada
28. Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada