Najah, Ayser, Suzan Salman, Hadeel Akram, Maha Ahmed, Lubaba Abdul Ameer, and Azza Khairi. “Measurement of Serum Superoxide Dismutase Levels in Women With Polycystic Ovarian Syndrome and Chronic Periodontitis ”. Journal of Baghdad College of Dentistry 29, no. 4 (December 15, 2017): 76-81. Accessed November 30, 2019. http://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/2385.