Al-Tameemi, Amina, et al. “Role of Repeating Testicular Sperm Extraction on Sperm Recovery by Using Combination Enzymatic and Mechanical Methods in Non-Obstructive Azoospemic Men”. Iraqi Journal of Embryos and Infertility Researches, vol. 13, no. 1, May 2023, pp. 86-94, https://doi.org/10.28969/IJEIR.v13.i1.r7.23.