Influence of cryopreservation on perinatal outcome after blastocyst- vs cleavage-stage embryo transfer: systematic review and meta-analysis.


OBJECTIVE To compare the perinatal outcomes of singleton pregnancies resulting from blastocyst- vs cleavage-stage embryo transfer and to assess whether they differ between fresh and frozen embryo transfer cycles. METHODS A systematic review of the literature was carried out using the Scopus, MEDLINE and ISI Web of Science databases with no time… (More)
DOI: 10.1002/uog.18942


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