1 aLawrence S. Bloomberg Faculty of Nursing, University of Toronto, Toronto, ON, Canada, bChild Health Evaluative Sciences, The Hospital for Sick Children, Toronto, ON, Canada, cDepartment of Psychology and Neuroscience, Dalhousie University, dCentre for Pediatric Pain Research, IWK Health Centre, eDepartment of Pediatrics, IWK Health Centre, Dalhousie University, fThe Mayday Fund.