1. Department of Psychology & Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
2. Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada
3. IWK Health Centre, Halifax, Nova Scotia, Canada
4. Paediatric Anaesthesia, IWK Health Centre, Halifax, New Brunswick, Canada
5. Anesthesia, Pain Management, and Perioperative Medicine, Dalhousie University, Nova Scotia, Halifax, Canada