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Authors
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (81771657)
General Projects of Social Development in Shaanxi Province (2018SF-260)
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Article History
Received: 11 August 2020
Accepted: 1 October 2020
First Online: 9 October 2020
Compliance with Ethical Standards
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: The authors declare that they have no conflicts of interest.
: This study was approved by the ethics committee of the Northwest Women’s and Children’s Hospital (number 2018002).
: The manuscript is a truthful original work without fabrication, fraud, or plagiarism.
