Zainab Sabah Hassab, Dr. Asmaa M. Salih Almohaidi, Bushra J. Al-Musawi. “The Role of Leukemia Inhibitory Factor (LIF) Gene Polymorphism With Gene Expression in Implantation Outcomes of IVF- Iraqi Arab Females”. Drugs and Cell Therapies in Hematology, vol. 10, no. 3, Oct. 2021, pp. 360-7, http://dcth.org/index.php/journal/article/view/519.