Funding for this research was provided by:
National Natural Science Foundation of China (81871372,81501497)
Article History
Received: 18 August 2020
Accepted: 4 December 2020
First Online: 11 December 2020
Ethics approval and consent to participate
: Written informed consent was obtained from the parents, and this study was approved by the institutional review board at the Second Xiangya Hospital of Central South University.
: Not Applicable.
: The authors declare that they have no competing interests.