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Authors
Huang, Jian https://orcid.org/0000-0002-5434-1148
Zhou, Limin
Yan, Zhaodong
Zhou, Zongbo
Gou, Xuejian
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Funding
Funding for this research was provided by:
Scientific research projects of health and family planning industry in Hainan Provinc
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Article History
Received: 5 October 2020
Accepted: 5 November 2020
First Online: 13 November 2020
Ethics approval and consent to participate
: This study was performed following the principles of the Declaration of Helsinki and was conducted according to the National Ethics Guidelines Statement. Informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
