Perkins, Kenneth A.
Kunkle, Nicole
Karelitz, Joshua L.
Funding for this research was provided by:
National Institute on Drug Abuse (DA035968)
Article History
Received: 16 December 2016
Accepted: 3 February 2017
First Online: 16 February 2017
Compliance with ethical standards
: These study procedures were approved by the University of Pittsburgh Institutional Review Board and are in accordance with the Helsinki Declaration of 1975.
: The authors declare that they have no conflict of interest.