Pregnancy outcomes after day 5 versus day 6 blastocyst-stage embryo transfer: A systematic review and meta-analysis.
Yi-Xin LiJin WangTian-Ze SunMo-Qi LvPan GeHao-Nan LiDang-Xia ZhouPublished in: The journal of obstetrics and gynaecology research (2020)
Current evidence shows that day 5 BET is superior to day 6 BET following vitrified-warmed cycle in clinical practice. Due to the overall low quality of available evidence, more larger and well-conducted studies are needed to compare the pregnancy outcomes between day 5 and day 6 BET before drawing a clear conclusion.