Funding for this research was provided by:
National Institute of Child Health and Human Development (R37 HD29957)
National Institute of Neurological Disorders and Stroke (R01 NS35102)
Williams Syndrome Association (WSA 0104, WSA 0111)
National Heart, Lung, and Blood Institute (R01 HL10599)
Received: 27 April 2020
Accepted: 5 November 2020
First Online: 20 November 2020
Ethics approval and consent to participate
: This project was reviewed and approved by the Institutional Review Boards of the University of Louisville. Written informed consent was obtained from parents or legal guardians of all participants.
: Not applicable.
: The authors declare that they have no competing interests.