COVID-19(23) Patient(13) SARS-CoV-2(13) coronavirus(12) acute respiratory syndrome(11) Infection(10) patients(10) disease(9) treated(8) Coronavirus disease 2019(8) Treatment(7) reported(7) antibody(7) therapy(6) respiratory(6) demonstrated(6) severe acute respiratory syndrome Coronavirus(6) acute respiratory syndrome coronavirus(6) Hematological malignancy(6) Evidence(6) death(6) severity(5) coronavirus disease(5) acute respiratory syndrome coronavirus 2(5) Steroids(5) ICU(5) Immunocompromised patients(5) effective(5) chronic lymphocytic leukemia(5) tested(5)