Funding for this research was provided by:
National Institutes of Health (R01DA021525, R01DA011591)
Canadian Institutes of Health Research (Embedded Clinician Scholar Award, Canada Research Chair in Addiction Medicine - Tier 1)
Received: 13 May 2019
Accepted: 25 June 2019
First Online: 3 July 2019
Ethics approval and consent to participate
: The study was ethically approved by the University of British Columbia Research Ethics Board at its Providence Healthcare site.
: Not applicable.
: The authors declare that they have no competing interests.