The relationship between serum estradiol and progesterone levels one day before frozen embryo transfer and pregnancy rates in artificially prepared frozen embryo cycles: are there any threshold serum hormone levels to predict pregnancy in luteal support by the vaginal and subcutaneous route combined?
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Objective: To investigate the potential influence of serum estradiol (E2) and progesterone (P4) levels, measured one day before artificially prepared frozen embryo transfer (FET), on pregnancy rates in women who received combined... ...
