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Authors
Li, Zhi-Peng
Mao, Wen-Hui
Huang, Fei
Wang, Ni
Ma, Li-Ping
Zhang, Li-Qun
Gao, Meng-Qiu
Wang, Wei-Bing
Zhao, Qi http://orcid.org/0000-0003-0140-3920
Tang, Sheng-Lan
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Funding
Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1149395)
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Article History
Received: 28 January 2021
Accepted: 15 June 2021
First Online: 29 June 2021
Declarations
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: Ethical approval of the study was issued by the Institutional Review Board of Chinese Center for Disease Control and Prevention. Consent form was obtained before individual data collection and could be provided upon request.
: Not applicable.
: All authors declare that they have no competing interests.
