Funding for this research was provided by:
National Natural Science Foundation of China (81801532, 81701518)
Scientific Research Program of The Third Affiliated Hospital of Guangzhou Medical University (2017Q15)
Received: 15 December 2020
Accepted: 12 May 2021
First Online: 11 June 2021
: This study was approved by the ethics committee of the Third Affiliated Hospital of Guangzhou Medical University. Each patient signed informed consent on obtaining and analyzing their clinical data prior to the initiation of IVF/ICSI-ET treatment. Informed consent was obtained from all individual participants included in the study.
: The author confirms that the study described has not been published before, that its publication has been approved by all co-authors and that its publication has been approved (tacitly or explicitly) by the responsible authorities at the institution where the study was carried out.
: The authors declare.