Affiliation: | 1. Children's Nursing, Faculty of Health, Social Care and Education, Kingston University, St George's University of London, , London, United Kingdom;2. Anesthesia and Psychology, Dalhousie University, Medical Director of Pediatric Pain Management, IWK Health Centre, , Halifax, Nova Scotia, Canada;3. Faculty of Health Professions, Dalhousie University, , Halifax, Nova Scotia, Canada |