Funding for this research was provided by:
National Institute on Drug Abuse (R01DA023062)
Article History
First Online: 18 November 2017
Compliance with Ethical Standards
:
: The authors declare that they have no competing interests.
: 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. The study was approved by the Ohio State University Institutional Review Board.
: Informed consent was obtained from all individual participants included in the study.