Funding for this research was provided by:
Spencer Foundation (201000138)
Eunice Kennedy Shriver National Institute of Child Health and Human Development (R24-HD041041)
Received: 23 July 2019
Accepted: 10 January 2020
First Online: 20 January 2020
Ethics approval and consent to participate
: This paper was ruled exempt by the SUNY Downstate Medical Center Institutional Review Board (FWA# 00003624, Study #440053–1.)
: Not applicable. This paper complies with the contract for the restricted National Longitudinal Study of Adolescent and Adult Health dataset regarding reporting low frequency cells that could lead to individually identifiable information.
: The author declares that they have no competing interests.