1. Menzies School of Health Research, Charles Darwin University, Darwin, Australia
2. College of Medicine and Public Health, Flinders University, Adelaide, Australia
3. Division of Medicine, Royal Darwin Hospital, Darwin, Australia
4. Clinical Toxicology Unit, Princess Alexandra Hospital, Brisbane, Australia
5. Clinical Toxicology Research Group, University of Newcastle, Newcastle, Australia
6. Centre for Clinical Research in Emergency Medicine, University of Western Australia, Perth, Australia
7. Aeromedical and Medical Retrieval Division, Ambulance Tasmania, Hobart, Australia