Funding for this research was provided by:
National Institute on Drug Abuse (R01DA039073)
Center for AIDS Research, University of California, San Diego (P30 AI036214)
Text and Data Mining valid from 2018-09-15
Received: 19 April 2018
Accepted: 29 August 2018
First Online: 15 September 2018
Ethics approval and consent to participate
: The study protocol and consent documentation was approved by the Human Research Protections Program of the University of California, San Diego, and by the Institutional Review Board at Universidad Xochicalco, Tijuana.
: Not applicable.
: The authors declare that they have no competing interests.
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