Funding for this research was provided by:
National Institute on Drug Abuse (R01DA035141)
Article History
First Online: 11 February 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study were approved by an institutional IRB and were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Parental consent and student assent were required and obtained for survey participation.