1 Emergency and Trauma Centre, Royal Brisbane and Women's Hospital, Herston, Queensland, Australia jaimi.greenslade@health.qld.gov.au.
2 Australian Centre for Health Services Innovation, Centre for Healthcare Transformation, School of Public Health and Social Work, Queensland University of Technology, Brisbane, Queensland, Australia.
3 Emergency and Trauma Centre, Royal Brisbane and Women's Hospital, Herston, Queensland, Australia.
4 Department of Cardiology, Royal Brisbane and Women's Hospital, Herston, Queensland, Australia.
5 Faculty of Medicine, The University of Queensland, Saint Lucia, Queensland, Australia.