Vitrified-warmed blastocyst transfer on the 5th or 7th day of progesterone supplementation in an artificial cycle Vrije Universiteit Brussel
Prospective studies comparing different durations of progesterone supplementation before transfer of vitrified-warmed blastocysts in an artificial cycle are lacking. However, in oocyte donation programmes, the sporadic available evidence demonstrates considerable differences in clinical pregnancy rates according to the duration of progesterone administration. This randomised controlled trial (RCT), included 303 patients undergoing a ...