Ye, Lixia
Chen, Jieping
Fang, Ting
Ma, Rui
Wang, Jianmei
Pan, Xingqiang
Dong, Hongjun
Xu, Guozhang
Funding for this research was provided by:
Ningbo Health Branding Subject Fund (ppxk2018-10)
the Science and Technology Planning Project of Ningbo (2018A610407)
The Public Welfare Technology Application Research Funding Projects of Zhejiang Province (LGF20H260006)
Article History
Received: 9 October 2020
Accepted: 3 June 2021
First Online: 10 June 2021
Declarations
:
: The protocol for this research was approved by the Research Ethics Review Board of Ningbo Municipal Center for Disease Prevention and Control(No.202013). Informed consent was exempted because it was limited to analysis of previously de-identified data collected for public health surveillance purposes.
: Not applicable.
: The authors declare that they have no competing interests.