1. Clinical Toxicology Unit/Emergency Department, Prince of Wales Hospital, Randwick, NSW, Australia;
2. Department of Pharmacology, School of Medical Sciences, University of Sydney, Sydney, NSW, Australia;
3. New South Wales Poisons Information Centre, The Children’s Hospital at Westmead, Westmead, NSW, Australia;
4. Department of Clinical Toxicology and Pharmacology, Calvary Mater Newcastle and Clinical Toxicology Research Group, University of Newcastle, Newcastle, NSW, Australia;
5. Clinical Toxicology Unit, Princess Alexandra Hospital, Brisbane, QLD, Australia;
6. Queensland Poisons Information Centre, Lady Cilento Children's Hospital, South Brisbane, QLD, Australia