Levey JM, Bjornsson B, Banner B, Kuhns M, Malhotra R, Whitman N, Romain PL, Cropley TG, Bonkovsky HL. Mixed cryoglobulinemia in chronic hepatitis C infection. A clinicopathologic analysis of 10 cases and review of recent literature. Medicine (Baltimore). 1994 Jan; 73(1):53-67.