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Authors
Chen, Gangxin https://orcid.org/0000-0001-9393-2365
Zheng, Beihong
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Funding
Funding for this research was provided by:
Fujian Provincial Maternity and Children Hospital (YCXM 19-29;YCXZ 18-04)
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Article History
Received: 22 October 2020
Accepted: 23 February 2021
First Online: 4 March 2021
Declarations
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: This study was approved by the ethics committee of Fujian Provincial Maternity and Children Hospital.(YCXM2019–105).
: All authors provided final approval of the version to be published and agree to be accountable for all aspects of the work in ensuring that questions.
: The authors declare that they have no competing interests.
