Liu, Chun-Fa
Song, Yi-Meng
He, Wen-Cong
Liu, Dong-Xin
He, Ping
Bao, Jing-Jing
Wang, Xin-Yang
Li, Yan-Ming
Zhao, Yan-Lin http://orcid.org/0000-0002-4510-8643
Funding for this research was provided by:
National Major Science and Technology Projects of China (2017ZX10304402-001-015)
Chinese Center for Disease Control and Prevention (59911905)
Article History
Received: 1 February 2021
Accepted: 16 April 2021
First Online: 29 April 2021
Declarations
:
: This study was approved by the ethics committee of the China Center for Disease Control and Prevention and conducted in accordance with the approved guidelines.
: Not applicable.
: The authors declare that they have no competing interests.