Funding for this research was provided by:
Text and Data Mining valid from 2019-06-18
Received: 18 March 2019
Accepted: 3 June 2019
First Online: 18 June 2019
Ethics approval and consent to participate
: The study was approved by the ethics board committee of University of Southern California (IRB approval ID: UP-18-00467).
: Consent to publish was obtained from patients and parents.
: The authors declare that they have no competing interests.