Study on the possible role of the -174G>C IL-6 promoter polymorphism in predicting response to rituximab in rheumatoid arthritis. Reumatismo [Internet]. 2010 Dec. 30 [cited 2025 Apr. 26];62(4):253-8. Available from: https://www.reumatismo.org/reuma/article/view/reumatismo.2010.253