Ron El-Hawary, MD, MSc, FRCS(C), Associate Professor of Surgery (Orthopedics and Neurosurgery), Dalhousie University, Chief of Pediatric Orthopedics, IWK Health Centre, Halifax, NS, CanadaCraig P. Eberson, MD, Associate Professor and Chief of Pediatric Orthopedics and Scoliosis Service, Warren Alpert School of Medicine, Brown University, Providence, RI, USA