1. Department of Emergency Medicine; The Townsville Hospital; Townsville Queensland Australia
2. College of Public Health and Medical and Veterinary Sciences; James Cook University; Townsville Queensland Australia
3. College of Medicine and Dentistry; James Cook University; Townsville Queensland Australia
4. Emergency Department; Mater Health Service; Brisbane Queensland Australia
5. School of Public Health and Social Work; Queensland University of Technology; Brisbane Queensland Australia
6. Emergency Department; Austin Hospital; Melbourne Victoria Australia
7. Department of Medicine; The University of Melbourne; Melbourne Victoria Australia