1. Center for Population HealthBurnet InstituteMelbourne Victoria Australia
2. Infectious Diseases UnitThe Alfred HospitalMelbourne Victoria Australia
3. Department of Epidemiology and Preventive MedicineMonash UniversityMelbourne Victoria Australia
4. Center for Research Excellence in Injecting Drug UseBurnet InstituteMelbourne Victoria Australia
5. Melbourne School of Psychological SciencesUniversity of MelbourneParkville Victoria Australia
6. Faculty of Health Sciences, National Drug Research InstituteCurtin UniversityPerth Western Australia Australia
7. Victorian Infectious Disease ServiceRoyal Melbourne HospitalParkville Victoria Australia