COVID-19(4) Chronic Hepatitis B(3) Hepatocellular carcinoma(2) Epidemiology(2) Mortality(2) endoscopy(2) Hepatitis B virus(2) hepatitis B(2) droplets(1) immunosuppressive therapy(1) immune response(1) T follicular helper cells.(1) Diagnosis(1) DAA treatment(1) severe acute respiratory syndrome coronavirus-2(1) Severe acute respiratory syndrome coronavirus 2.(1) Comorbidity(1) Inflammatory bowel disease(1) diabetes(1) liver(1) ALT elevation(1) Hereditary(1) Chemotherapy(1) checkpoint inhibitors(1) Interleukin-21(1) HBV reactivation(1) contrast-enhanced ultrasound(1) Nonliver comorbidities(1) gastrointestinal symptoms(1) Osteoporosis.(1)