Kathleen L Bagot1,2, Dominique A Cadilhac3,4, Christopher F Bladin3,5. 1. Public Health & Health Services Research Group, Stroke Division, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Heidelberg, Victoria, Australia. kathleen.bagot@florey.edu.au. 2. Translational Public Health and Evaluation Division, Stroke and Ageing Research, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia. kathleen.bagot@florey.edu.au. 3. Public Health & Health Services Research Group, Stroke Division, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Heidelberg, Victoria, Australia. 4. Translational Public Health and Evaluation Division, Stroke and Ageing Research, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia. 5. Ambulance Victoria, Doncaster, Australia.