| hepatitis b and c in the hemodialysis unit of tocantins, brazil: serological and molecular profiles. | a survey was conducted in the hemodialysis population of the state of tocantins, brazil, aiming to assess the prevalence of hepatitis b virus (hbv) and hepatitis c virus (hcv) infections, to analyze associated risk factors, and also to investigate these viruses genotypes distribution. during january and march 2001, all patients (n = 100) were interviewed at the unique dialysis unit in tocantins. blood samples were collected and serum samples were screened for hbv serological markers. hepatitis b ... | 2003 | 13677340 |