Funding for this research was provided by:
National Institute on Drug Abuse (R34 DA037516-01A1, P30 DA02878)
Received: 26 May 2020
Accepted: 17 August 2020
First Online: 3 September 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by the Institutional Review Boards at the University of Southern California and Northwestern University prior to participant recruitment.
: Not applicable
: All authors declare that they have no conflicts of interest.