Lapadula, G. “Biologic Therapy With Anti-TNFa in Spondyloarthritides and Other Autoimmune Diseases”. Reumatismo 57, no. s4 (1): 22-29. Accessed April 12, 2021. https://www.reumatismo.org/index.php/reuma/article/view/reumatismo.2005.4s.22.