Funding for this research was provided by:
National Natural Science Foundation of China (81201370)
Article History
Received: 31 August 2020
Accepted: 30 November 2020
First Online: 9 December 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethics Committee of Shanghai Children’s Medical Center. The written informed consent was obtained from all patients’ parents and guardians.
: Consent for publication was obtained from the parents or guardians.
: The authors declare that they have no conflict of interest.