Funding for this research was provided by:
LuMind Research Down Syndrome Foundation
Intellectual and Developmental Disabilities Research Center (U54 HD079123)
Received: 16 July 2020
Accepted: 3 April 2021
First Online: 19 April 2021
: The Institutional Review Board at every participating site provided approval and oversight to ensure ethical conduct of human subjects research throughout the study. Informed consent was provided by all parents/guardians who participated. Consent or assent was provided by each participant with Down syndrome, depending on age and consenting capacity as determined by the Institutional Review Boards.
: Not applicable.
: The authors declare that they have no competing interests.