COVID-19(21) hepatitis B(13) Chronic Hepatitis B(12) Hepatocellular carcinoma(10) Hepatitis B virus(9) Inflammatory bowel disease(9) SARS-CoV-2(8) SARS-CoV-2.(8) HBV(7) gastrointestinal symptoms(7) cirrhosis(7) Liver fibrosis(6) tenofovir.(6) pandemic(5) entecavir(5) antiviral therapy(5) diarrhea(4) Crohn’s disease(4) Viral hepatitis.(4) coronavirus(4) HBV reactivation(4) chronic hepatitis C(3) coeliac disease(3) health maintenance(3) Stool(3) liver diseases(3) vaccination.(3) Mild(3) vaccination(3) IBD patient(3)