Funding for this research was provided by:
Natural Science Foundation of Chongqing (cstc2020jcyj-msxmX1087)
Received: 19 February 2021
Accepted: 10 May 2021
First Online: 20 May 2021
: Ethical approval was obtained from the Institutional Ethics Review Board of Children’s Hospital, Chongqing Medical University. The need for informed consent was waived due to the anonymous and observational nature of this study.
: Not applicable.
: The authors declare that they have no conflicts of interest.