1 The Trauma and Orthopaedic Research Unit, Canberra Hospital, Canberra, ACT, Australia; Medical School, Australian National University, Canberra, ACT, Australia.
2 The Trauma and Orthopaedic Research Unit, Canberra Hospital, Canberra, ACT, Australia; Faculty of Health, University of Canberra, Canberra, ACT, Australia.