1. Department of Cardiology, Royal Melbourne Hospital, Melbourne, VIC.
2. Centre for Heart Rhythm Disorders, University of Adelaide and Royal Adelaide Hospital, Adelaide, SA.
3. Department of Cardiology, Concord Hospital, Sydney, NSW.
4. School of Public Health and Community Medicine, University of New South Wales, Sydney, NSW.
5. National Heart Foundation of Australia, Melbourne, VIC.
6. St Vincent's Hospital, Sydney, NSW.