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  1. Article

    Open Access

    Comparison of pregnancy outcomes between 4th day morula and 5th day blastocyst after embryo transfer: a retrospective cohort study

    This study was designed to evaluate pregnancy outcomes between morulae transferred on day 4 (D4) and blastocysts transferred on day 5 (D5).

    Yiqun Sun, Qi Shen, Haitao **, Liucai Sui, Yanghua Fu in BMC Pregnancy and Childbirth (2024)