COVID-19(9) SARS-CoV-2(6) Patient(5) Treatment(4) pandemic(4) Against(3) patients(3) caused(3) Infection(3) therapy(3) Rheumatic diseases(3) acute respiratory syndrome(3) IL-6(3) coronavirus(3) IL-1(3) Support(2) Cytokine storm(2) described(2) syndrome(2) intravenous(2) health system(2) Inflammation(2) Hydroxychloroquine(2) immune response(2) Evidence(2) COVID19(2) Autoimmune(2) Immunoglobulin(2) severe COVID-19(2) cytokine(2)