1. Department of Dermatology, St George Hospital, Sydney, NSW 2217, Australia
2. Department of Anatomical Pathology, South Eastern Area Laboratory Service, St George Hospital, Sydney, NSW 2217, Australia
3. University of New South Wales, Sydney, NSW 2052, Australia
4. Cancer Research Program, Garvan Institute of Medical Research, Darlinghurst, NSW 2010, Australia
5. Cancer Care, St George Hospital, Sydney, NSW 2217, Australia