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Authors
Cui, Yushan https://orcid.org/0000-0001-9728-2283
Wang, Yang https://orcid.org/0000-0002-9127-1273
Hou, Changchun https://orcid.org/0000-0001-6234-3701
Zhang, Dandan https://orcid.org/0000-0002-4763-2019
Zheng, Pai
Chen, Zhangjian https://orcid.org/0000-0002-3370-5184
Li, Wenfeng
Duan, Yani
Li, Fang
Liu, Hongliang https://orcid.org/0000-0002-7140-0955
Jia, Guang https://orcid.org/0000-0003-3981-7221
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Funding
Funding for this research was provided by:
National Nature Science Foundation of China (81573103)
Scientific and Technological Project of Tianjin health (ZC20048)
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Article History
Received: 19 August 2021
Accepted: 20 December 2021
First Online: 9 February 2022
Declarations
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: The authors declare that there are no conflicts of interest.
: This study was approved by the “The medical ethics committee of Tianjin Centers for Disease Control and Prevention” and has been carried out in accordance with followed the ethical guidelines set out in the Declaration of Helsinki. All the selected children agreed to participate with consent from their guardians, and the pregnant women consented to participate.
: All participants have consented to participate in this study.
: The participants have consented to the submission of the manuscript to the journal.
