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

BACKGROUND Preimplantation genetic testing (PGT) of embryos developed in vitro
requires a biopsy for obtaining cellular samples for the analysis. Signs of cell injury have …

BACKGROUND Despite significant advances in our understanding of the pathophysiology
of preeclampsia (PE), there are still many unknowns and controversies in the field. Women …

Studies in the gravid rat model revealed a key role for the corpus luteal hormone, relaxin, in
the maternal circulatory changes of early pregnancy epitomized by profound systemic …

STUDY QUESTION Is there an association between fertility status, method of conception
and the risks of birth defects and childhood cancer? SUMMARY ANSWER The risk of …

The use of frozen embryo transfer in assisted reproductive technology (ART) has steadily
increased since development in the early 1980's. While there are many benefits to delayed …

Purpose In the first of two companion papers, we comprehensively reviewed the recent
evidence in the primary literature, which addressed the increased prevalence of …

Research question What are the obstetric and neonatal risks for women conceiving via
frozen–thawed embryo transfer (FET) during a modified natural cycle compared with an …

Background To evaluate the differences in pregnancy outcomes between assisted
reproductive technology (ART) patients and natural pregnant women in Shanghai, China in …

The use of assisted reproductive technology has increased in the United States in the past
several decades. Although most of these pregnancies are uncomplicated, in vitro fertilization …