Funding for this research was provided by:
National Key Research and Development Program of China (2016YFC1000601)
Natural Science Foundation of Shandong Province, China (ZR2016HM79, ZR2014HM017)
Article History
Received: 21 April 2021
Accepted: 4 September 2021
First Online: 20 September 2021
Declarations
:
: All procedures performed in studies were in accordance with the ethical standards for the care and use of laboratory animals. Approval was obtained from the Institutional Review Board of the Center for Reproductive Medicine of Shandong University.
: Not applicable.
: Not applicable.
: The authors declare no competing interests.