[1]Department of EmergencyMedicine Faculty ofMedicine Dalhousie University Halifax Nova Scotia B3H 3A6 Canada;
[2]Department of Undergraduate Medicine Faculty ofMedicine Dalhousie University Halifax Nova Scotia B3H 3A6 Canada;
[3]Faculty of Pharmaceutical Sciences University of British Columbia Vancouver British Columbia V6T 1Z3 Canada;
[4]Department of Emergency Medicine Faculty of Medicme University of British Columbia Vancouver British Columbia V6T1Z3 Canada;