1. Clinical Pharmacology and Toxicology, St Vincent’s Hospital, Sydney, NSW, Australia
2. NSW Poisons Information Centre, Children’s Hospital Westmead, Westmead, NSW, Australia
3. Centre for Alcohol and Other Drugs, NSW Ministry of Health, St Leonards, NSW, Australia
4. Forensic Toxicology Laboratory, NSW Health Pathology, Forensic and Analytical Science Service, Lidcombe, NSW, Australia
5. Edith Collins Centre, Drug Health Services, Royal Prince Alfred Hospital, Sydney, NSW, Australia