Fadda, P., L. La Civita, A.L. Zignego, and C. Ferri. 2002. “A Clinico-Serological Investigation of Arthritis in Patients With or Without Cryoglobulinemic Syndrome”. Reumatismo 54 (4):316-23. https://doi.org/10.4081/reumatismo.2002.316.