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Authors
Lin, Wenyu
Zhang, Qiaoyu
Chen, Yaojia
Chen, Lihua
Dong, Binhua
Sun, Pengming http://orcid.org/0000-0002-5072-6091
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Article History
Received: 3 February 2021
Accepted: 5 October 2021
First Online: 9 December 2021
Declarations
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: Ethical approval for the study was obtained from the Ethics Review Committee of Fujian maternity and child health hospital (No: 2016-019), China. The procedures followed were in accordance with the ethical standards of the Declaration of Helsinki of the World Medical Association. All women provided informed consent for participation.
: This manuscript does not report personal data such as individual details images or videos. Therefore, consent for publication is not applicable.
: The authors declare there is no competing interests.
