688
Participants
Start Date
January 1, 2018
Primary Completion Date
September 1, 2022
Study Completion Date
December 1, 2024
Embryo transfer
For patients in each group after oocyte retrieval, they will have embryo transferred 3 or 5 days after oocyte retrieval. For FET cycles, they will have ET with an euploid blastocyst.
Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University, Zhengzhou
Luoyang maternal and child hospital
UNKNOWN
The First Affiliated Hospital of Zhengzhou University
OTHER