Funding for this research was provided by:
National Institute on Drug Abuse (R01DA031055-01A1)
Canadian Institutes of Health Research (MFE-152443, 143342, MOP-107544, PJT-153139)
Canadian HIV Trials Network, Canadian Institutes of Health Research
Michael Smith Foundation for Health Research (16863, 5209)
Text and Data Mining valid from 2018-08-25
First Online: 25 August 2018
Compliance with Ethical Standards
: The authors have no conflicts of interest to declare.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. All study procedures received ethical approval from the research ethics boards of the University of British Columbia, the University of Victoria, and Simon Fraser University.
: Informed consent was obtained from all individual participants included in the study.