Wu, Zheyuan
Rueda, Zulma Vanessa
Li, Tao
Zhang, Zurong
Jiang, Yuan
Sha, Wei
Yu, Fangyou
Chen, Jing
Pan, Qichao
Shen, Xin
Yuan, Zheng’an
Funding for this research was provided by:
Ministry of Science and Technology of the People's Republic of China (2018ZX10715012)
Ministry of Science and Technology of the People's Republic of China (2017YFD0500301)
Ministry of Science and Technology of the People's Republic of China (2017ZX10201302-006-002)
National Natural Science Foundation of China (81872679)
Article History
Received: 23 January 2019
Accepted: 11 February 2020
First Online: 18 February 2020
Ethics approval and consent to participate
: The study was approved by the Ethical Review Committee at Shanghai Municipal Center for Disease Control and Prevention. Since only anonymized secondary data were used, no informed consent was sought.
: Not applicable.
: The authors declare that they have no competing interests.