Ateia, Yaser Abbas, et al. “Levels of Some Proinflammatory Cytokines in Obese Women With Polycystic Ovary Syndrome After Metformin Therapy”. AL-Kindy College Medical Journal, vol. 9, no. 2, June 2013, pp. 45-48, https://jkmc.uobaghdad.edu.iq/index.php/MEDICAL/article/view/527.