Phaethon Karagiannis1, Jonathan R Clark2, Sydney Ch'ng3. 1. Department of Plastic Surgery, Royal Prince Alfred Hospital. 2. Department of Head and Neck Surgery, Chris O'Brien Lifehouse Cancer Centre, and, Central Clinical School, University of Sydney. 3. Department of Plastic Surgery and, Institute of Academic Surgery, Royal Prince Alfred Hospital, Department of Head and Neck Surgery, Chris O'Brien Lifehouse Cancer Centre, Camperdown, New South Wales, Australia.