1. Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Ontario, Canada
2. Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada
3. Department of Medical Imaging, CHEO, University of Ottawa, Ottawa, Ontario, Canada
4. Graduate Entry Medical School, The University of Limerick, Limerick, Ireland
5. Department of Family and Community Medicine, University of Toronto, Toronto, Ontario, Canada
6. Department of Pediatrics, Division of Haematology-Oncology, The Hospital for Sick Children, Toronto, Ontario, Canada
7. Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
8. Division of Pediatric Emergency Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
9. Department of Medical Imaging, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
10. Department of Family and Community Medicine, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada