1. Sydney Medical School, The University of Sydney, Sydney, Australia
2. Department of Radiology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
3. Heart Research Institute, Newtown, NSW, Australia
4. Department of Cardiology, Royal North Shore Hospital, St Leonards, NSW, Australia
5. Department of Clinical Immunology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
6. Department of Cardiology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia