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Authors
Wang, Huai
Gao, Pei
Chen, Weixin
Yuan, Qianli
Lv, Min
Bai, Shuang
Wu, Jiang
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Article History
Received: 17 August 2021
Accepted: 5 April 2022
First Online: 12 April 2022
Declarations
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: The study was approved by the medical ethics committee in Beijing Centers for Disease Control and Prevention (CDC) in 2017. Written inform consent was obtained from each participant. The procedure of the study was in accordance with the Good Clinical Practice Guidelines and the ethical standards of the Helsinki Declaration.
: Not applicable.
: The authors declare that they have no competing interests.
