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”, dcth, vol. 10, no. 3, pp. 360–370, Oct. 2021.