Prevalence of low-level hepatitis B viremia in patients with HBV surface antigen-negative hepatocellular carcinoma with and without hepatitis C virus infection in Japan: analysis by COBAS TaqMan real-time PCR.

Prevalence of low-level hepatitis B viremia in patients with HBV surface antigen-negative hepatocellular carcinoma with and without hepatitis C virus infection in Japan: analysis by COBAS TaqMan real-time PCR.