Funding for this research was provided by:
Shanghai Municipal Health Bureau (shslczdzk06902)
Article History
Received: 4 November 2020
Accepted: 12 February 2021
First Online: 27 February 2021
Ethics approval and consent to participate
: This study was approved by the ethics committee of Shanghai Children’s Hospital. Written informed consent was obtained from the patients’ guardians on behalf of the children enrolled in this study.
: Not applicable.
: All authors declare that they have no competing interests.