Funding for this research was provided by:
National Institute on Drug Abuse (R01 DA039950, T32DA023356, R37 DA019829, 3R01DA040648-02S1, DP2- DA040256-01)
(P30AI36214, P30 AI036214)
Canadian Institutes of Health Research
Ontario Ministry of Research, Innovation and Science
UC MEXUS Dissertation Grant (DI 15-42)
Accepted: 7 October 2020
First Online: 12 October 2020
Ethics approval and consent to participate
: PRIMER and ECIV both received ethics approval from the University of California, San Diego Institutional Review Board (IRB) and the Universidad Xochicalco Ethics Committee. All participants gave informed consent for both the quantitative and qualitative interviews.
: Not applicable.
: The authors declare that they have no competing interests.