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Authors
Du, Shuang
Bai, Shuoxin
Zhao, Xiaodong
Lin, Shaoqian
Zhai, Yifan
Wang, Zhaojun
Wang, Zhiping https://orcid.org/0000-0002-1345-9617
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (81773386)
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Article History
Received: 18 November 2021
Accepted: 25 February 2022
First Online: 18 March 2022
Declarations
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: The study was approved by the Ethics Committee of Preventive Medicine of Shandong University (approved number: 20170315). Informed consent was obtained from mothers of subjects.
: The author confirms that neither the entire manuscript nor any part of its content has been submitted for publication elsewhere. The author consents to publish.
: The authors declare no competing interests.
