Direct acting antiviral (DAA) therapy of HCV, effects on the cryoglobulinemic vasculitis: A multi center open label study. Issue 1 (16th February 2017) - Mauro, E.; Quartuccio, L.; Ghersetti, M.; Lenzi, M.; Gitto, S.; Andreone, P.; Casarin, P.; De Vita, S.; Pozzato, G.; Mazzaro, C.