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Authors
Liu, Xiaojie
Wang, Jingwan
Fu, Xiao
Li, Jing
Zhang, Meng
Yan, Junhao
Gao, Shanshan https://orcid.org/0000-0003-4355-8365
Ma, Jinlong
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Funding
Funding for this research was provided by:
The National Key Research and Development Program of China (2016YFC1000202)
This study was supported by The National Key Research and Development Program of China (2018YFC1002804)
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Article History
Received: 27 January 2021
Accepted: 5 April 2021
First Online: 9 April 2021
Declarations
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: This study was approved by the Institutional Review Board of Center for Reproductive Medicine Affiliated to Shandong University. Written informed consent was waived due to the retrospective nature, and patients’ data were used anonymously.
: Not applicable.
: The authors declare that they have no competing interests.
