Layland, Eric K. http://orcid.org/0000-0003-0641-408X
Ram, Nilam http://orcid.org/0000-0003-1671-5257
Caldwell, Linda L. http://orcid.org/0000-0002-1910-4390
Smith, Edward A. http://orcid.org/0000-0001-8564-9279
Wegner, Lisa http://orcid.org/0000-0001-9415-119X
Funding for this research was provided by:
National Institute on Drug Abuse (R01 DA01749, T32 DA017629)
Article History
Received: 2 August 2019
Revised: 1 September 2020
Accepted: 16 April 2021
First Online: 16 August 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: All study procedures were conducted in accordance with the ethical standards of the Institutional Review Boards at The Pennsylvania State University and Stellenbosch University and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.