Revel A

PurposeTo investigate the association between endometrial compaction and pregnancy rates in unstimulated natural cycle frozen embryo transfers.DesignA single-center prospective cohort study. Endometrial thickness by transvaginal ultrasound …

It was suggested in the 1980s that long-term pituitary down-regulation by a gonadotrophin-releasing hormone agonist, termed the ultra-long protocol, inducing a hypo-oestrogenic state, might improve reproductive outcomes in women with endome…