1. Department of Intensive Care, Launceston General Hospital, Launceston, Tasmania, Australia
2. Department of Emergency Medicine, Launceston General Hospital, Launceston, Tasmania, Australia
3. New South Wales Poisons Information Centre, Sydney Children’s Hospitals Network, New South Wales, Australia
4. Department of Clinical Toxicology, Calvary Mater Newcastle, New South Wales, Australia
5. School of Medicine and Public Health, University of Newcastle, New South Wales, Australia