1. Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada
2. Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, ON, Canada
3. Dalla Lana School of Public Health, Division of Epidemiology, University of Toronto, Toronto, ON, Canada
4. ICES, Toronto, ON, Canada
5. Institute for Better Health, Trillium Health Partners, Mississauga, ON, Canada
6. Temerty Faculty of Medicine, Department of Laboratory Medicine and Pathology, University of Toronto, Toronto, ON, Canada
7. McGill University Health Center Research Institute (RI-MUHC), Child Health and Human Development Program, Centre for Outcomes Research and Evaluation, Montreal, QC, Canada
8. Department of Pediatrics, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
9. Department of Neurology & Neurosurgery, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada.