A prospective study of hepatitis B virus markers in patients with chronic HBV infection from brazilian families of western and asian origin - Carrilho, Flair Jose; Nita, S. K. Ono; Cardoso, R. A.; Cançado, E. L. R.; Pinho, J. R. R.; Alves, Venâncio Avancini Ferreira; Silva, L. C. da (Brazilian Journal of Medical and Biological Research, 2005)