Preparation of the Endometrium for Frozen Embryo Transfer: A Systematic Review.

In the study by Ding et al., frozen/thawed blastocysts were transferred on the 6 th (n=23) or 7 th day (n=26) of P administration and a higher CPR, OPR and implantation rate was reported in the day 6 group (60.9% vs 53.8%, 56.5% vs 50.0% and 40.7% vs 30.0%, respectively), but the differences did not reach statistical significance (p>0.05) ( 46 ).

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