Funding for this research was provided by:
National Institute on Drug Abuse (T32 DA017629, P50 DA039838)
Article History
First Online: 11 September 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by the Institutional Review Board of The Pennsylvania State Unviersity.
: Informed consent was obtained from all adult participants included in the study. For adolescent participants, consent and assent was obtained from the parent and adolescent, respectively.