Hepatitis B virus(9) COVID-19(8) Hepatocellular carcinoma(8) entecavir(6) Chronic Hepatitis B(5) SARS-CoV-2(4) hepatitis B(4) Prognosis.(4) HBV(4) gut microbiota(3) Treatment.(3) acute liver failure(3) TDF(3) HBV DNA(3) coronavirus(3) cirrhosis(3) antiviral therapy(3) Nucleos(t)ide analogs(2) gut microbial-host-immune axis(2) Drug-induced liver injury(2) tenofovir.(2) CHB(2) overall survival(2) gut-lung axis(2) host-dominating flare(2) HBsAg(2) ischemia reperfusion injury(2) ETV(2) Prognosis(2) Liver fibrosis(2)