Affiliation: | 1. Department of Emergency Medicine;;2. School of Public Health, University of Alberta, Edmonton, Alberta;;3. Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia;;4. Department of Pediatrics and Child Health, University of Manitoba;;5. Manitoba Institute of Child Health, Winnipeg, Manitoba;;6. Department of Pediatrics, University of Alberta;;7. Women and Children’s Health Research Institute, Edmonton, Alberta |