Day 4 good morula embryo transfer provided compatible live birth rate with day 5 blastocyst embryo in fresh IVF/ET cycles

In this study, we performed day 4 MET avoid BET on Sunday. The grading system we provided was more detailed for embryo selection and it was easier to remember. Our data showed that morula embryo transfer might be a flexible, easier and applicable method for embryo transfer in daily routine.