Assessment of free light chains in HCV positive patients with mixed cryoglobulinemia vasculitis undergoing rituximab treatment. (15th February 2015) - Basile, U.; Gragnani, L.; Torti, E.; Piluso, A.; Gulli, F.; Urraro, T.; Dell'Abate, M.T.; Stasi, C.; Monti, M.; Rapaccini, G.L.; Zignego, A.L.