Why frozen embryo transfer results are lower with vaginal progesterone? Did we miss something?
Priming endometrial receptivity for embryo transfers has seen a rebound in interest over the past decade. Programmed cycles in which women receive exogenous estradiol (E2) and progesterone were inherited from the early days of donor-egg assisted reproductive technology. Indeed, the high success rates of donor-egg assisted reproductive technology from inception led to use the same […]