1. National Drug and Alcohol Research Centre, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
2. School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney NSW 2052, Australia
3. Schizophrenia Research Institute, Sydney NSW 2010, Australia
4. Royal Prince Alfred Hospital Drug Health Service, Sydney NSW 2050, Australia
5. Discipline of Addiction Medicine, University of Sydney, Sydney NSW 2006, Australia