1. British Columbia Centre for Excellence in HIV/AIDS, St Paul’s Hospital, Vancouver, BC, Canada
2. Centre for Clinical Epidemiology and Evaluation, University of British Columbia, Vancouver, BC, Canada
3. Vancouver Coastal Health Authority, Vancouver, BC, Canada
4. School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada
5. Faculty of Health Sciences, Simon Fraser University, Burnaby, BC, Canada