1. Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney 2006, Australia
2. Sydney Children’s Hospitals Network, The Children’s Hospital at Westmead, Sydney 2145, Australia
3. Department of Health Sciences, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney 2109, Australia
4. Sydney Children’s Hospitals Network, Paediatric Gait Analysis Service of New South Wales, Sydney 2145, Australia