Published on in Vol 7, No 5 (2018): May
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/9532, first published
.
1 British Columbia Centre for Excellence in HIV/AIDS, Vancouver, BC, Canada
2 Department of Medicine, University of British Columbia, Vancouver, BC, Canada
3 British Columbia Centre for Substance Use, Vancouver, BC, Canada