Mahmood, Dalia Jasim, et al. “Comparison Between Preovulatory Follicular Pulsed Doppler Indices Under the Effect of Mild Ovarian Stimulation by Clomiphene Citrate Vs Letrozole”. Iraqi Journal of Embryos and Infertility Researches, vol. 10, no. 1, Dec. 2020, pp. 67-82, https://doi.org/10.28969/IJEIR.v10.i1.r5.