Purpose The aim of this study was to compare the outcomes of three endometrial
preparation methods prior to frozen embryo transfer (FET): Natural cycle (NC), modified …

Purpose This study aims to review the literature and perform a meta-analysis to determine if
the presence of a corpus luteum has an impact on treatment outcomes in thaw cycles, where …

Introduction Fertility treatment with frozen thawed embryo transfer (FET) is widely used.
Women treated in artificial cycles (AC-FET) receive high doses of estrogen in contrast to …

Study objective The absence of corpus lutea in artificial cycle (AC) frozen embryo transfers
(FET) may increase the chances of pregnancy loss. In this retrospective cohort study, the …

Background Whether only low-grade blastocysts should undergo freeze–thaw transfer
during the in vitro fertilization/intracytoplasmic sperm injection cycle remains controversial; …

Research question Is there any difference in clinical outcomes between the progesterone-
modified natural cycle (P4mNC) and hormone replacement therapy (HRT) endometrial …

Objective: This study aimed to compare the pregnancy outcomes of natural cycles (NC) and
artificial cycles (AC) in patients undergoing endometrial preparation for frozen-thawed …

Assisted reproductive technologies (ART) have accomplished spectacular progresses over
the last few years, leading to sustained implantation rates (sIR)≥ 60% following euploid …

Background The use of frozen embryo transfers (FET) in assisted reproduction has
increased worldwide. Controlled ovarian hyperstimulation in a fresh transfer may impair …