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

Since the first reported birth following in vitro fertilization in 1978, further developments in
assisted reproductive technology (ART) treatments have produced at least 8 million babies …

We aimed to investigate the difference in the time to pregnancy (TTP) between women with
previous ectopic pregnancy (EP) and control women following in vitro fertilization (IVF) …

We aimed to assess the efficacy of accumulated embryo transfer (ACC-ET) through several
controlled ovarian hyperstimulation (COS) cycles to increase the rates of pregnancy in …

Background Alternatives to improve treatment outcomes in poor responders are needed. For
this we studied whether multiple (x3) Natural Modified (NM)-IVF (ICSI) cycles followed by an …

Purpose Some women undergoing stimulated cycles have elevated serum progesterone (P)
on the day of ovulation trigger, but its effect on embryo quality is unclear. We analyze …

Twin pregnancies are associated with greater risk of neonatal morbidity and mortality than a
singleton. This study was performed to investigate the twin pregnancy rate when two vitrified …

Introducción: La vitrificación de embriones es una técnica básica en la reproducción asistida
actual. Para su éxito se precisa una preparación endometrial que se consigue con la …

Poor ovarian response has been a challenging problem during controlled ovarian
stimulation for in vitro fertilization. Microdose flare gonadotropin agonist protocol used to be …

Fresh embryo transfer (ET) has been the norm in Assisted reproductive technology (ART)
treatment. However, there has been a concern about decreased implantation and …