Giannitti, C., G. Morozzi, S. D’Alfonso, F. Bellisai, and M. Galeazzi. 2008. “Viral Genotype and HLA Class II Alleles Influence on Extra-Hepatic Manifestations of Chronic HCV Infection”. Reumatismo 60 (3):192-98. https://doi.org/10.4081/reumatismo.2008.192.