1. Canadian Association of People Who Use Drugs (CAPUD), Dartmouth, Nova Scotia, Canada
2. Department of Medicine, Division of General Internal Medicine & Clinician-Investigator Program, Dalhousie University, Halifax, Nova Scotia, Canada
3. UCL Collaborative Centre for Inclusion Health, Institute of Epidemiology and Health Care, University College London, London, UK
4. Program in Addiction Medicine, Yale School of Medicine, New Haven, Connecticut, USA
5. Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
6. Center for Interdisciplinary Research on AIDS, Yale School of Public Health, New Haven, Connecticut, USA