Zainab Qasim Muhammad Al-Yasiri, Khalid Gatee Al-Fartosi. “Effect of Vitamin D on Lipid Profile and Oxidative Stress in Rheumatoid Arthritis Patients”. Drugs and Cell Therapies in Hematology, vol. 10, no. 3, Sept. 2021, pp. 1004-19, http://dcth.org/index.php/journal/article/view/1006.