Funding for this research was provided by:
FRAXA Research Foundation
Autism Science Foundation
Pierce Family Fragile X Foundation
Thrasher Research Fund
Society for Developmental and Behavioral Pediatrics
National Institute of Mental Health (1T32MH112510)
National Institute on Deafness and Other Communication Disorders (1K23DC017983-01A1, R01DC010290)
Received: 14 October 2020
Accepted: 16 February 2021
First Online: 25 February 2021
Ethics approval and consent to participate
: Institutional review board approval was obtained from Boston Children’s Hospital (IRB#P00025493, IRB#P00018377) prior to starting the study. Written, informed consent was obtained from all caregivers prior to their children’s participation in the study.
: Not applicable.
: The authors declare that they have no conflicts of interest.