Funding for this research was provided by:
National Institute on Drug Abuse (R33DA035634, R01DA038466)
National Institute of Mental Health (R01MH072961)
Article History
Received: 25 January 2017
Accepted: 6 November 2017
First Online: 14 November 2017
Ethics approval and consent to participate
: This research was performed in accordance with the Declaration of Helsinki and approved by the Institutional Review Board at University of Southern California (No. UP-14-00105).
: Not applicable.
: The authors declare that they have no competing interests.
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