COVID-19(14) receptor(8) patients with COVID-19(6) performed(6) SARS-CoV-2(5) SARS-COV-2 infection(5) Protein(5) Patient(5) Adult(4) Inflammation(4) respiratory distress syndrome.(4) death(4) Standard of care(3) iron homeostasis(3) Treatment(3) syndrome(3) median(3) Anti-inflammatory(3) evaluated(3) systematic review(3) adverse events(3) ferritin(3) incidence(3) Transferrin(3) RCTs(3) positive RT-PCR(3) Composite(3) single-center(3) Primary outcome(3) evaluate(3)