Fiocco, U., M. Vezzù, L. Cozzi, and S. Todesco. “IL-1Ra (recombinant Human IL-1 Receptor Antagonist) in the Treatment of Rheumatoid Arthritis: The Efficacy”. Reumatismo 56, no. s1 (1): 62-73. Accessed November 29, 2020. https://www.reumatismo.org/index.php/reuma/article/view/reumatismo.2004.1s.62.