National Cancer Screening Program of South Korea.

<p>^a High risk group of Liver cancer includes patients with cirrhosis, chronic liver disease, hepatitis B surface antigen (HBs Ag) positive or hepatitis C virus antibody (HCV Ab) positive. However, individuals who have used medical services for biliary cancer (hepatocellular carcinoma, intrahepatic duct carcinoma and cholangiocarcinoma) during the previous two years are excluded.</p><p>National Cancer Screening Program of South Korea.