1. Department of Surgery, St Vincent's Hospital Melbourne The University of Melbourne Melbourne Victoria Australia
2. School of Physiotherapy and Exercise Science Curtin University Perth Western Australia Australia
3. Australian Orthopaedic Association Sydney New South Wales Australia
4. Faculty of Health and Medicine University of Newcastle Newcastle New South Wales Australia
5. Medicine Service VA Medical Center Birmingham Alabama USA
6. Department of Medicine at the School of Medicine University of Alabama at Birmingham Birmingham Alabama USA
7. Department of Epidemiology, School of Public Health University of Alabama at Birmingham Birmingham Alabama USA
8. Department of Orthopaedics St. Vincent's Hospital Melbourne Victoria Australia