Ge, Yajun
Jin, Dong
Lai, Xin-He
Yang, Jing
Lu, Shan
Huang, Ying
Zheng, Han
Zhang, Xiaoyan
Xu, Jianguo
Article History
Received: 3 August 2020
Revised: 27 October 2020
Accepted: 11 November 2020
First Online: 23 December 2020
Ethical Statements
: The ethical practice was approved by Ethical Committee of the National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (# ICDC-2016004).