Fresh versus frozen embryo transfer: backing clinical decisions with scientific and clinical evidence

Abstract excerpt

BACKGROUND: Improvements in vitrification now make frozen embryo transfers (FETs) a viable alternative to fresh embryo transfer, with reports from observational studies and randomized controlled trials suggesting that: (i) the endometrium in stimulated cycles is not optimally prepared for implantation; (ii) pregnancy rates are increased following FET and (iii) perinatal outcomes are less affected after FET....

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