Fig. 1

Flow diagram detailing patient recruitment and follow-up study group assignment. The number within each group is indicated (n). HCC, hepatocellular carcinoma; HBsAg, hepatitis B surface antigen; HBsAb, anti-hepatitis B surface antibody; HBcAb, anti-hepatitis B core antibody; HCV, hepatitis C virus; PBI, prior hepatitis B virus infection