Li, Duan
Wang, Xiaoyan http://orcid.org/0000-0003-2938-7539
Li, Guangyu
Dang, Yujie
Zhao, Shidou
Qin, Yingying http://orcid.org/0000-0002-0319-7799
Article History
Received: 29 January 2021
Revised: 27 March 2021
Accepted: 24 April 2021
First Online: 16 May 2021
Funding
: The authors received no specific funding for this work.
: The authors declare no competing interests.
: The study was authorized and approved by the Institutional Review Board of Reproductive Medicine of Shandong University, and written informed consent was obtained from all participants.