Abdul-Hameed, K.M. et al. 2019. Early and Short Follicular GnRH Antagonist (Sandwich) Protocol Versus Conventional GnRH Antagonist Protocol in Normal Responders. Iraqi Journal of Embryos and Infertility Researches. 9, 1 (Nov. 2019), 68–88. DOI:https://doi.org/10.28969/IJEIR.v9.i1.r5.