Funding for this research was provided by:
National Institute on Drug Abuse (DP2-DA040226)
Article History
First Online: 20 January 2020
Compliance with Ethical Standards
:
: Christina S. Meade, Sheri L. Towe, Yunan Xu, and Crissi Rainer declare no conflicts of interest.
: All study procedures were in accordance with the ethical standards of the institutional research board at the Duke University Health System and with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all participants included in the study.