Williams-Butler, Abigail http://orcid.org/0000-0002-3594-5501
Ryan, Joseph P.
McLoyd, Vonnie C.
Schulenberg, John E.
Davis-Kean, Pamela E.
Article History
First Online: 17 June 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The University of Michigan provided IRB approval for this study. 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.