Unstimulated immature oocyte retrieval: early versus midfollicular endometrial priming.


OBJECTIVE To assess the ability to retrieve transvaginally unstimulated immature oocytes from assisted reproductive technology (ART) patients and to determine their competency to mature, fertilize, and implant with early versus midfollicular exogenous estrogen endometrial priming. DESIGN Prospective randomized study. SETTING In vitro fertilization unit… (More)


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