1. Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
2. Department of Public Health, La Trobe University, Melbourne, Victoria, Australia
3. Centre for Australian Weather and Climate Research, CSIRO (Commonwealth Scientific and Industrial Research Organisation) Marine and Atmospheric Research, Aspendale, Victoria, Australia
4. Research and Evaluation Department, Ambulance Victoria, Melbourne, Victoria, Australia
5. Emergency Medicine, University of Western Australia, Perth, Western Australia