Funding for this research was provided by:
Henan medical science and technology research program (LHGJ20210145)
Project of Key Research and Development and Promotion of Henan Province (182102310199)
Received: 17 April 2022
Accepted: 18 August 2022
First Online: 27 August 2022
: The study protocol was reviewed and approved by the Ethical Review Committee of Henan CDC. The survey participant or his/her parents or guardian gave fully informed consent to participate in this study.
: Not applicable.
: The authors declare that they have no competing interests.