Bellisai, F., et al. “Anti-Proteinase 3 Antibodies in Diffuse Systemic Sclerosis (SSc) With Normotensive Renal Impairment: Is It Suggestive for an Overlapping Between SSc and Idiopathic Vasculitis?”. Reumatismo, vol. 53, no. 1, Mar. 2001, pp. 33-39, doi:10.4081/reumatismo.2001.33.