Upper endoscopy, Colonoscopy, Liver problems, Esophageal varices, Hepatopulmonary syndrome, Primary biliary cholangitis..., Hereditary hemorrhagic telangiectasia, Wilson's disease, Cirrhosis, Hepatocellular carcinoma, Cholangiocarcinoma, Hepatitis C, Alcoholic hepatitis, Portal hypertension, Nonalcoholic fatty liver disease, Primary sclerosing cholangitis, Hepatic encephalopathy, Hepatitis B, Hemochromatosis, Autoimmune hepatitis, Portopulmonary hypertension