Hamad, Banaz Abdulsattar, and Shwan K. Media. “Relationship Between Vitamin D3 Level and Rheumatoid Arthritis Patients Attending Rizgary Teaching Hospital in Erbil City”. Zanco Journal of Medical Sciences (Zanco J Med Sci) 21, no. 2 (August 29, 2017): 1736–1742. Accessed July 3, 2022. https://zjms.hmu.edu.krd/index.php/zjms/article/view/84.