Wang, Weijing
Li, Weilong
Wu, Yili
Tian, Xiaocao
Duan, Haiping
Li, Shuxia http://orcid.org/0000-0001-8095-3175
Tan, Qihua http://orcid.org/0000-0003-3194-0030
Zhang, Dongfeng http://orcid.org/0000-0001-9308-9371
Funding for this research was provided by:
National Natural Science Foundation of China (82073641)
Article History
Received: 24 January 2021
Revised: 13 July 2021
Accepted: 26 July 2021
First Online: 2 August 2021
Competing interests
: The authors declare no competing interests.
: The authors state that all participants have provided written informed consent for participating in the study, and this study was approved by the local ethics committee at Qingdao CDC, Qingdao, China.