1. Department of Physiotherapy, Faculty of Health Sciences, The University of Sydney, 75 East St, Lidcombe, NSW 2141, Australia
2. Department of Physiotherapy, Faculty of Health Sciences, The University of Sydney
3. Department of Orthopaedic Surgery, Harvard Medical School, Boston, Massachusetts, and Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center, Boston, Massachusetts
4. Department of Physiotherapy, Westmead Public Hospital, Western Sydney Local Health District, Westmead, NSW, Australia
5. Department of Physiotherapy, Westmead Public Hospital, Western Sydney Local Health District