Vitrification preservation of good-quality blastocysts for more than 5 years reduces implantation and live birth rates

Abstract STUDY QUESTION Does vitrification cryopreservation of embryos for more than 5 years affect the pregnancy outcomes after frozen embryo transfer (FET)? SUMMARY ANSWER Vitrification cryopreservation of good-quality blastocysts for more than 5 years is associated with a decrease in the implanta...

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