Sulli, A., A. Burroni, M. Tuccio, C. Pizzorni, C. Craviotto, M. Ghio, M. Basso, B. Seriolo, and M. Cutolo. “Nailfold Videocapillaroscopy in Systemic Sclerosis: Diagnostic and Follow-up Parameters and Correlation With Both Specific Serum Autoantibodies and Subsets of Skin Involvement”. Reumatismo 56, no. 1 (1): 36-45. Accessed July 11, 2020. https://www.reumatismo.org/index.php/reuma/article/view/reumatismo.2004.36.