Funding for this research was provided by:
National Institutes of Health, Eunice Kennedy Shriver National Institute of Child Health and Human Development (#HHSN267200703434C and #HHSN2752008000031/HHSN275002)
Text and Data Mining valid from 2019-02-01
Received: 29 June 2018
Accepted: 22 January 2019
First Online: 1 February 2019
: Namrata Sanjeevi is a Postdoctoral Fellow, Tonja Nansel and Aiyi Liu are Senior Investigators and Leah Lipsky is a Staff Scientist at <i>Eunice Kennedy Shriver</i> National Institute of Child Health and Human Development.
: Children and adolescents provided assent, while written informed consent was obtained from parents during enrollment. Youth turning 18 years of age during the study also provided written informed consent. The procedures were approved by the institutional review boards of the institutions participating in the study.
: Not applicable
: The authors declare that they have no competing interests.
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