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Authors
Wang, Zengyan https://orcid.org/0000-0002-8327-9419
Gao, Yong
Zhang, Dan
Li, Yubin
Luo, Lu
Xu, Yanwen
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Funding
Funding for this research was provided by:
Guangdong Provincial Key Laboratory of Reproductive Medicine (No.). (2012A061400003)
National Natural Science Foundation of China (81200473)
China National Funds for Distinguished Young Scientists (81871110)
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Article History
Received: 20 February 2019
Accepted: 14 November 2019
First Online: 22 November 2019
Compliance with ethical standards
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: The institutional ethical board (the First Affiliated Hospital of Sun Yat-sen University) approved this study, and owing to its retrospective nature, informed consent was waived. The authors were blinded to the identity of the individual patients and have no information about the patients corresponding to the data.
: The authors declare that they have no conflict of interest.
