Hameed M, Khurshid R, Hameed H, Upal SS, Kazmi T, Raana G, and Ahmad F. 2022. “Severity of Rheumatoid Arthritis, and Levels of Vitamin D3 & C-Reactive Protein”. Esculapio Journal of SIMS 18 (2). Pakistan:200-204. https://doi.org/10.51273/esc22.2518218.