Rahim, A.I. et al. 2018. Although Late; but the First, an Iraqi Success in Human Em-bryo Cryopreservation Using Vitrification and the Factors Af-fecting the Pregnancy Rate: Cross-Sectional Study. Iraqi Journal of Embryos and Infertility Researches. 8, 1 (Jun. 2018), 10–21. DOI:https://doi.org/nan.