1. Endocrine Surgical Unit, Royal North Shore Hospital, St Leonards, New South Wales, Australia.
2. Northern Clinical School, Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia.
3. Department of Endocrinology and Diabetes, Royal North Shore Hospital, St Leonards, New South Wales, Australia.
4. Cancer Diagnosis and Pathology Group, Kolling Institute of Medical Research, Royal North Shore Hospital, Sydney, New South Wales, Australia.
5. Department of Anatomical Pathology, Royal North Shore Hospital, St Leonards, New South Wales, Australia.