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Authors
Li, Weihong
Yan, Hanqiu
Liu, Baiwei
Tian, Yi
Chen, Yanwei
Jia, Lei
Gao, Zhiyong
Wang, Quanyi https://orcid.org/0000-0001-9552-2503
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Funding
Funding for this research was provided by:
fund of beijing center for disease prevention and control, beijing research center for preventive medicine (No.2019-BJYJ-10)
capital's funds for health improvement and research (2020-2‐1011)
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Article History
Received: 29 July 2021
Accepted: 7 December 2021
First Online: 24 December 2021
Declarations
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: The study was approved by the Ethics Committee of the Beijing Center for Disease Prevention and Control. Sample collection was approved by either the patients or their parents with prior informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
