Zhang, Pan
Chen, Bi
Lou, Heqing
Zhu, Yanan
Chen, Peipei
Dong, Zongmei
Zhu, Xuan
Li, Ting
Lou, Peian
Article History
Received: 7 September 2021
Accepted: 30 November 2021
First Online: 4 January 2022
Declarations
:
: The study protocol was approved by the Xuzhou Center for Disease Control and Prevention and was conducted in accordance with the principles of the Declaration of Helsinki (1975, revised 2000). All participants provided written informed consent.
: Not applicable.
: No potential conflicts of interest relevant to this article were reported.