fig2
![Qidong hepatitis B virus infection cohort: a 25-year prospective study in high risk area of primary liver cancer](https://image.oaes.cc/cbae9944-10b5-42ed-b318-3688e16ba128/2368.fig.2.png)
Figure 2. Flow chart for enrollment of participants into Qidong hepatitis B virus infection cohort. HBsAg: hepatitis B surface antigen
Figure 2. Flow chart for enrollment of participants into Qidong hepatitis B virus infection cohort. HBsAg: hepatitis B surface antigen
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