COVID-19(8) Inflammatory bowel disease(7) disease(6) Hepatitis B virus(4) liver(4) BSG(3) Safety.(3) ulcerative colitis(3) approach(3) outcome(3) Guidance(3) herpes zoster(3) SARS-CoV-2(3) Infection(3) Quality of life(3) IBD(3) Safe(3) RCT comparison(3) Immune-mediated(2) Mortality(2) multivariable logistic regression(2) Course(2) therapy(2) significantly(2) obesity(2) symptom.(2) HBV-specific CD8+ cell response(2) cohort study(2) cirrhosis(2) Tenofovir alafenamide(2)