Funding for this research was provided by:
National Institutes of Health (NS066392, AT008742)
National Institutes of Health (NS065957)
Received: 6 August 2020
Accepted: 21 November 2020
First Online: 1 March 2021
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Karolinska Hospital and the informed consent of the parents and, when possible, patients, was obtained.
: Not applicable.
: The authors declare that they have no competing interests.