Wang, Yao
Pang, Bo
Ma, Wei
Kou, Zengqiang
Wen, Hongling
Article History
Received: 3 July 2022
Accepted: 18 October 2022
First Online: 1 November 2022
Declarations
:
: All methods were performed in accordance with the relevant guidelines and regulations. This study was approved by the ethics committee of the Shandong Center for Disease Control and Prevention, Shandong, China (approval number 2021–47). Individual identifying information was not available and therefore not included in the study.
: Not applicable.
: The authors declare no competing interests.