Worldwide, more than 7 million children have now been born after ART: these delivery rates
are steadily rising and now comprise 2–6% of births in the European countries. To achieve …

ABSTRACT BACKGROUND Elective freezing of all good quality embryos and transfer in
subsequent cycles, ie elective frozen embryo transfer (eFET), has recently increased …

BACKGROUND Initial observational studies and a systematic review published 5 years ago
have suggested that obstetric and perinatal outcomes are better in offspring conceived …

BACKGROUND Successful cryopreservation of oocytes and embryos is essential not only to
maximize the safety and efficacy of ovarian stimulation cycles in an IVF treatment, but also to …

Background Elective frozen-embryo transfer has been shown to result in a higher live-birth
rate than fresh-embryo transfer among anovulatory women with the polycystic ovary …

Background The transfer of fresh embryos is generally preferred over the transfer of frozen
embryos for in vitro fertilization (IVF), but some evidence suggests that frozen-embryo …

STUDY QUESTION Is there an association between the different endometrial preparation
protocols for frozen embryo transfer (FET) and obstetric and perinatal outcomes …

Background Among women who are undergoing in vitro fertilization (IVF), the transfer of
frozen embryos has been shown to result in a higher rate of live birth than the transfer of …

Objective To evaluate the relationship between frozen-thawed single blastocyst transfer (BT)
and maternal and neonatal outcomes of pregnancy. Design Retrospective analysis. Setting …

STUDY QUESTIONS What are the risks of adverse outcomes in singletons born after frozen-
thawed embryo transfer (FET)? SUMMARY ANSWER Singletons born after FET have a …