Funding for this research was provided by:
National Institute on Drug Abuse (R01-DA030781, R01-DA030762, R01-DA030747, R34-DA035728-01A1, R01DA030793, R01DA030793, R01DA030793, 5U01-DA037702, 5U01-DA037702, ROI DA030768, R01-DA039934, K02DA032322)
National Institute on Drug Abuse (R01-DA030747)
National Institute of Mental Health (P30-MH58107, R01-MH103076)
National Institute on Aging (P30-AG021684)
National Institute of Nursing Research (R01-NR017334, R01-NR4014789)
Center for Clinical and Translational Science, University of Los Angeles (UL1-TR001881)
Received: 7 August 2018
Accepted: 6 September 2019
First Online: 29 October 2019
Ethics approval and consent to participate
: Table removed
: Not applicable.
: The authors declare that they have no competing interests.