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Authors
Sun, Ce
Li, Ke
Xu, Huan
Wang, Xiangjun
Qin, Pengzhe
Wang, Suixiang
Liang, Boheng
Xu, Lin
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (81941019)
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Article History
Received: 8 January 2021
Accepted: 3 June 2021
First Online: 7 July 2021
Declarations
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: This study has been approved by the Guangzhou Municipal Health Commission. Ethical approval of this study was obtained from the ethical committee in the Guangzhou Center for Disease Control and Prevention. The informed consent was given by all participants to data collection and individual follow-up.
: Not applicable.
: The authors declare that they have no competing interests.
