Al-Sarray ZA, Hussein RH, Al-Hafidh AH, Al-Rayahi IA. Vitamin D deficiency Associates with Disease Severity in Rheumatoid Arthritis Patients. Al-Mustansiriyah Journal of Science [Internet]. 2023 Feb. 25 [cited 2024 May 3];33(5):33-8. Available from: https://mjs.uomustansiriyah.edu.iq/index.php/MJS/article/view/1310