1. Department of Paramedicine Monash University Melbourne Victoria Australia
2. Department of Paramedicine Monash UniversityAmbulance Victoria Melbourne Victoria Australia
3. Department of Paramedicine and Department of Trauma Ambulance VictoriaMonash UniversityThe Royal Children’s Hospital Melbourne Victoria Australia
4. Ambulance Victoria Melbourne Victoria Australia
5. Department of Epidemiology and Preventive Medicine and Department of Paramedicine Ambulance VictoriaMonash University Melbourne Victoria Australia
6. Department of Epidemiology and Preventive Medicine Centre for Research and Evaluation Ambulance VictoriaMonash UniversityThe Alfred Hospital Melbourne Victoria Australia
7. Department of Epidemiology and Preventive Medicine and Department of Paramedicine Ambulance Victoria, Research and Evaluation Monash University Melbourne Victoria Australia