Funding for this research was provided by:
Eunice Kennedy Shriver National Institute of Child Health and Human Development (3R21HD090647-01A1S1, R21HD095164)
Received: 17 February 2020
Accepted: 9 November 2020
First Online: 26 November 2020
Ethics approval and consent to participate
: The study was approved by the University of South Carolina Institutional Review Board (Pro00065211). Prior to enrolment, all participants provided written informed consent for the collection and use of their data and children provided verbal assent.
: Not applicable.
: The authors declare that they have no competing interests.