Funding for this research was provided by:
RDCRN Data Management and Coordinating Center (U2CTR002818)
Li Ka Shing Foundation
Nelson Arthur Hyland Foundation
National Center for Advancing Translational Sciences (U54NS065705)
Received: 11 July 2020
Accepted: 13 October 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: All participating centers had ethics approval from their institutional review board and all participants provided informed consent.
: Not applicable.
: The authors declare that they have no competing interests.