1. Department of Orthopaedics; Royal Newcastle Centre; New Lambton; New South Wales; Australia
2. Department of Surgery; Grampians Integrated Cancer Services; Ballarat; Victoria; Australia
3. University Department of Medicine; University of Melbourne; Epping; Victoria; Australia
4. School of Surgery; University of Western Australia; Perth; Western Australia; Australia
5. Department of Surgery; University of Melbourne; Royal Melbourne Hospital; Parkville; Victoria; Australia