1. aDepartments of Critical Care Medicine
2. bOtolaryngology–Head and Neck Surgery
3. dPediatrics, Division of Pediatric Emergency Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
4. cAnesthesiology and Pain Medicine
5. eDepartment of Neuroscience and Mental Health, Peter Gilgan Center for Research and Learning, Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada