1. Behaviours and Health Risks Program, Burnet Institute, Melbourne, Victoria, Australia
2. School of Public Health and Preventive Medicine, Monash University, Clayton, Victoria, Australia
3. Uniting Medically Supervised Injecting Centre, Kings Cross, New South Wales, Australia
4. Biostatistics Unit, Faculty of Health, Deakin University, Burwood, Victoria, Australia
5. South Eastern Sydney Local Health District, New South Wales, Australia
6. Kirby Institute, University of New South Wales, Sydney, Sydney, New South Wales, Australia
7. Justice Health Forensic Mental Health Network, New South Wales Health, Randwick, New South Wales, Australia
8. Centre for Quality and Patient Safety, School of Nursing and Midwifery, Deakin University, Geelong, Australia