Funding for this research was provided by:
Centers for Disease Control and Prevention
Office of Juvenile Justice and Delinquency Prevention
Smith Richardson Foundation
National Institute of Justice
First Online: 28 July 2018
Compliance with Ethical Standards
: 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 or assent was obtained from all individual participants included in the study.
: The authors declare that they have no conflict of interest.