Funding for this research was provided by:
National Institute on Drug Abuse (R01DA021670)
Article History
First Online: 18 February 2017
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: Informed consent was obtained from all participants’ legal guardians, and student assent was also obtained in this study.
: This study was supported by Grant Number R01DA021670 from the National Institute on Drug Abuse to The Pennsylvania State University (Michael Hecht, Principal Investigator). Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the National Institutes of Health.
: 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. This study received approval from University Institutional Review Board at The Pennsylvania State University.