<qa>  What is the positive Hepatitis B surface antigen?- Hepatitis status: Diagnosis of chronic hepatitis B, as evidenced by positive Hepatitis B surface antigen HBsAg at Visit 1. Chronic stable hepatitis C e.g.,positive hepatitis C antibody test result at screening Visit 1 or within 3 months prior to first dose of study treatment are acceptable if subject otherwise meets entry criteria. 