1 Department Of Pediatrics, Dalhousie University, IWK Health Centre, Halifax, NS B3K 6R8, Canada; IWK Health, Halifax, NS, Canada. Electronic address: megan.thomas@iwk.nshealth.ca.
2 Division of Behavioral Medicine and Clinical Psychology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
3 Lawrence Bloomberg Faculty of Nursing, University of Toronto, Toronto, ON, Canada; Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada.
4 Department of Pediatrics, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada.
5 Department of Pediatrics, University of Chicago, Chicago, IL, USA.