John, Steven A.
Whitfield, Thomas H. F.
Rendina, H. Jonathon
Parsons, Jeffrey T.
Grov, Christian
Funding for this research was provided by:
National Institute of Drug Abuse (R21-DA039019, K01-DA039030)
Article History
First Online: 14 September 2017
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.