1. Emergency and Trauma Centre, National Trauma Research Institute; The Alfred Hospital; Melbourne Victoria Australia
2. Department of Epidemiology and Preventive Medicine; Monash University; Melbourne Victoria Australia
3. National Trauma Research Institute; Monash University; Melbourne Victoria Australia
4. Department of Community Emergency Health and Paramedic Practice; Monash University; Melbourne Victoria Australia
5. Department of Psychiatry; The Alfred Hospital; Melbourne Victoria Australia