1. Divisions of Pediatric Emergency Medicine
2. Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
3. Division of Microbiology, Department of Pediatric Laboratory Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
4. Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
5. Pediatric Medicine, Department of Pediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada