Stisi, S., P. Sarzi-Puttini, M. Benucci, G. Biasi, S. Bellissimo, R. Talotta, and F. Atzeni. “RETRACTED - Pain in Systemic Sclerosis”. Reumatismo 66, no. 1 (June 6, 2014): 44-47. Accessed May 18, 2021. https://reumatismo.org/index.php/reuma/article/view/reumatismo.2014.764.