COVID-19(17) thrombosis(14) Patient(12) coronavirus disease(12) Venous Thromboembolism(10) Coronavirus disease 2019(9) D-dimer(8) with COVID-19(8) age(8) coronavirus(7) elevated(7) Mortality(7) less(7) D-dimer levels(7) Deep vein thrombosis(7) COVID-19 patients(7) venous thromboembolism.(7) Deep venous thrombosis(7) Pulmonary embolism(7) anticoagulation(7) conducted(6) Admission(6) thrombosis.(6) Inflammatory(6) thrombotic(6) the patient(6) increase in(6) Thrombotic events(6) patients with COVID-19(6) marker(6)