FSHB and Infertility: For the VD group and the CSD group, there were no significant differences in age, BMI, bFSH/LH, endometrial thickness, number of follicles with a diameter ≥14 mm on the trigger day, number of embryos transferred, infertility duration, or quality of transplanted embryos between the VD group and the CS group (P > 0.05).