Surface antigen serocleared hepatitis B virus infection increases the risk of mixed cryoglobulinemia vasculitis in male patients with chronic hepatitis C oleh Anna Morrone, Valerio Fiorilli, Lilia Cinti, Lilia Cinti, Piergiorgio Roberto, Piergiorgio Roberto, Alejandro L. Ferri, Marcella Visentini, Alessandro Pulsoni, Francesca Romana Spinelli, Adriano De Santis, Guido Antonelli, Stefania Basili, Maria Elena Tosti, Fabrizio Conti, Milvia Casato