260
Participants
Start Date
November 1, 2023
Primary Completion Date
October 30, 2025
Study Completion Date
October 30, 2026
duostim vs. two antagonist ovarian stimulations
Human menopausal gonadotropin (HMG) 300 IU/day with flexible antagonist protocol is used for ovarian stimulation, except in luteal phase stimulation of the duostim group. In the duostim group, all of the embryos are frozen. Fresh transfers are performed in the control group, frozen embryo transfers are performed in both control and duostim groups.
Shanghai First Maternity and Infant Hospital
OTHER