SARS-CoV-2(14) COVID-19(13) Patient(10) Spanish(10) Inflammatory bowel disease(9) age(8) Enfermedad inflamatoria intestinal(8) Prevalence(8) conducted(8) male(8) Treatment(7) hepatitis B(6) Diagnosis(6) Hepatitis(6) HBsAg(6) screening program(5) SARS-CoV-2.(5) median age(5) Comorbidities(5) antiviral treatments(5) evaluate(5) hospitals(5) hospitalized patient(5) Reactivation(5) Immunosuppression(5) Tofacitinib(5) marker(5) previous diagnosis(5) Prospective Study(5) HBV infection(5)