[1] University of Ottawa,Department of Emergency Medicine
[2] Ottawa Hospital Research Institute,Clinical Epidemiology Program
[3] University of British Columbia,Department of Emergency Medicine
[4] Université de Montréal,Department of Family Medicine and Emergency Medicine
[5] CHU de Québec,Division of Emergency Medicine
[6] Hôpital de l’Enfant-Jésus,Schwartz\Reisman Emergency Medicine Institute
[7] Université Laval,Department of Emergency Medicine
[8] Mount Sinai Hospital,undefined
[9] Sunnybrook Health Sciences Centre,undefined