Josephine Norman1
, Nick M Walsh1,5
, Janette Mugavin1
, Mark A Stoové1,2
, Jenny Kelsall1,3
, Kirk Austin1
and Nick Lintzeris1,4 
1Turning Point Alcohol and Drug Centre, 54 Gertrude St, Fitzroy, Victoria, Australia
2Centre for Epidemiology and Population Health Research, Macfarlane Burnet Institute for Medical Research and Public Health, 85 Commercial Rd, Melbourne, Victoria, Australia
3Victorian Drug User Organisation (VIVAIDS), 128 Peel St, North Melbourne, Victoria, Australia
4Drug Health Services, Sydney South West Area Health Service Page Building 5, Missenden Road, Camperdown, NSW, Australia
5Department of Epidemiology and Preventive Medicine, Monash University Alfred Campus, 89 Commercial Rd, Melbourne, Victoria 3004, Australia