COVID-19(12) Patient(10) thrombosis(10) Treatment(9) SARS-CoV-2(9) coronavirus disease(8) Mortality(7) Critically ill patient(6) anticoagulation(6) Image(6) performed(6) Venous Thromboembolism(6) age(5) evaluate(5) patients with COVID-19(5) antiplatelet(5) global pandemic(5) with COVID-19(5) mechanism(5) COVID-19 pandemic(5) Platelets(5) study population(5) Coronavirus disease 2019(4) increased risk(4) VTE(4) outcome(4) Vascular endothelium(3) Neutrophil extracellular traps(3) 95% CI(3) complement(3)