Low occurrence of occult hepatitis B virus infection and high frequency of hepatitis C virus genotype 3 in hepatocellular carcinoma in Brazil - Alencar, R. S. M.; Gomes, M. M. S.; Sitnik, R.; Pinho, J. R. R.; Malta, F. M.; Mello, I. M. V. G. C.; Mello, E. S.; Bacchella, Telesforo; Machado, M. C. C.; Alves, Venâncio Avancini Ferreira; Carrilho, Flair José (Brazilian Journal of Medical and Biological Research, 2008)