1. Department of Dermatology, St George Dermatology and Skin Cancer Centre, Sydney, Australia;
2. Sydney Medical School, University of Sydney, Sydney, Australia;
3. Department of Otolaryngology, Head and Neck Surgery, Concord Repatriation General Hospital, New South Wales, Australia;
4. Department of Burns, Concord Repatriation General Hospital, New South Wales, Australia;
5. Department of Otolaryngology and Head and Neck Surgery, Canberra Hospital, Sydney, Australia