1. School of Clinical Sciences Monash University Victoria Australia
2. Victorian Poisons Information Center and Austin Toxicology Service Austin Hospital Heidelberg Australia
3. Department of Emergency Medicine Blacktown and Mount Druitt Hospitals, Western Sydney Toxicology Service NSW Australia
4. Emergency Department and Department of Medicine Austin Hospital Heidelberg Australia
5. Departments of Emergency and Biomedical & Molecular Sciences Queen's University Kingston Ontario Canada
6. Western Sydney Toxicology Service Sydney Medical School NSW Australia
7. Monash Toxicology Service and Monash Emergency Research Collaborative, Dandenong Hospital, School of Clinical Sciences Monash University Victoria Australia