1. aMcGill University, Montreal, Quebec, Canada, and University of Connecticut, Farmington, Connecticut
2. bDepartment of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada
3. cResearch Institute of the McGill University Health Centre, Montreal, Quebec, Canada
4. dDepartments of Emergency Medicine and Pediatrics, University of California, Davis School of Medicine, Sacramento, California
5. eMontreal Children’s Hospital, Division of Pediatric Emergency Medicine, McGill University Health Centre, and the Department of Biostatistics, Epidemiology, and Occupational Health, McGill University, Montreal, Quebec, Canada