1. Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada
2. Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
3. Division of Paediatric Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
4. Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
5. ICES, Toronto, Ontario, Canada
6. Clinical Trials Unit, Ontario Child Health Support Unit, The Hospital for Sick Children, Toronto, Ontario, Canada
7. Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
8. Sunnybrook Hospital, Toronto, Ontario, Canada
9. Department of Paediatrics, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
10. Department of Pediatrics, Hamilton Health Sciences Centre, McMaster University, Hamilton, Ontario, Canada
11. Provincial Council for Maternal and Child Health, Toronto, Ontario, Canada
12. Lawrence M. Bloomberg Faculty of Nursing, University of Toronto, Toronto, Ontario, Canada
13. Division of Biostatistics, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
14. Department of Statistical Science, University College London, London, United Kingdom
15. School of Rehabilitation Therapy, Queen’s University, Kingston, Ontario, Canada