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Authors
Liu, Weiqi https://orcid.org/0000-0001-7044-8124
Liu, Qiaoling https://orcid.org/0000-0003-2109-3974
Liu, Weiling https://orcid.org/0000-0001-7192-5295
Zhuang, Guiying https://orcid.org/0000-0002-1169-5325
Qiu, Cuiqing https://orcid.org/0000-0002-5739-5205
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Article History
Received: 28 March 2022
Accepted: 13 June 2022
First Online: 20 June 2022
Declarations
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: This research has been approved by the ethics committee of The Maternal and Children Health Care Hospital (Huzhong Hospital) of Huadu, Guangzhou, Guangdong, China (Reference No.: 2021–034). The research has been carried out fully in line with the Declaration of Helsinki and with the Uniform Requirements for Manuscripts Submitted to Biomedical Journals.
: Not applicable; the study data were fully anonymised.
: Not applicable.
: The authors declare no competing interests.
