1. Pediatric Outcomes Research Team, Divisions of Pediatric Medicine and
2. Departments of Pediatrics and
3. Child Health Evaluative Sciences and
4. Institute for Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; and
5. Neurosciences & Mental Health, SickKids Research Institute, Toronto, Canada
6. Medical Imaging, Faculty of Medicine, and
7. Infectious Diseases, Department of Paediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada;