1. Department of Anesthesia and Pain Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
2. Department of Anesthesia, University of Toronto, Toronto, Ontario, Canada
3. The Offord Centre for Child Studies and Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada
4. Institute of Health Policy Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
5. Li Ka Shing Knowledge Institute of St. Michael’s Hospital, Toronto, Ontario, Canada
6. Department of Anesthesia and Pain Management, Toronto General Hospital, Toronto, Ontario, Canada
7. Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
8. Child Health Evaluative Sciences (T.T.), The Hospital for Sick Children, Toronto, Ontario, Canada