Hepatitis g virus / gb virus c in brazil: preliminary report - Pinho, J R R; Capacci, M L L; Silva, L. C.; Carrilho, Flair José; Santos, C A; Pugliese, V; Guz, B; Levi, J E; Ballarati, C A F; Bernardini, A P (Revista do Instituto de Medicina Tropical de Sao Paulo, 1996)