Objective To determine whether vaginal progesterone for programmed endometrial
preparation is noninferior to intramuscular progesterone in terms of live birth rates from …

Research question What should be the optimal route of luteal support in programmed frozen
embryo transfer (FET) cycles? Design This was a randomized, parallel, phase IV pilot trial …

Background There is a lack of consensus on the optimal dose and form of progesterone
supplementation during frozen‐thawed embryo transfer with hormone replacement therapy …

STUDY QUESTION Does supplementation with vaginal tablets of progesterone after frozen-
thawed embryo transfer in natural cycles improve the live birth rate? SUMMARY ANSWER …

OBJECTIVE: To see if progesterone support has a beneficial effect on live birth rate after
frozen embryo transfer in natural cycles. DESIGN: Prospective randomized controlled trial …

Research question Does intramuscular progesterone supplementation ensure ongoing
pregnancy rates (OPR) comparable with vaginal progesterone only in hormone replacement …

Objective The optimal route of progesterone (P4) administration in embryo transfer (FET)
cycles remains to be determined. The objective of this study is to compare the pregnancy …

Despite the worldwide increase in frozen embryo transfer, the search for the best protocol to
prime endometrium continues. Well-designed trials comparing various frozen embryo …

Prospective studies comparing different durations of progesterone supplementation before
transfer of vitrified-warmed blastocysts in an artificial cycle are lacking. However, in oocyte …

Objective To determine whether live birth rates differ by type of endometrial preparation in
frozen embryo transfer (FET) cycles. Design Retrospective cohort study. Setting Academic …