1. NSW Poisons Information Centre; The Childrens Hospital Westmead; Sydney New South Wales
2. Sydney Medical School; University of Sydney; Sydney New South Wales
3. Department of Clinical Toxicology; Royal Prince Alfred Hospital; Sydney New South Wales Australia
4. Departments of Medicine, Paediatrics and Health Policy; Management and Evaluation, University of Toronto; Toronto Canada
5. Clinical Toxicology Research Group; University of Newcastle; Newcastle New South Wales Australia