1. School of Public Health and Preventive Medicine; Monash University; Melbourne Victoria Australia
2. Emergency Operations; Ambulance Victoria; Melbourne Victoria Australia
3. Emergency and Trauma Centre, Alfred Hospital; Melbourne Victoria Australia
4. School of Nursing, Midwifery and Paramedicine; Curtin University; Perth Western Australia Australia
5. Department of Research and Evaluation; Ambulance Victoria; Melbourne Victoria Australia
6. Discipline of Emergency Medicine; The University of Western Australia; Perth Western Australia Australia
7. Operational Quality and Improvement Department; Ambulance Victoria; Melbourne Victoria Australia
8. Intensive Care Unit; Alfred Hospital; Melbourne Victoria Australia