Study design
As the standard, high-resolution computed tomography (HRCT) was performed for high-risk patients with COVID-19. In line with HRCT results, while patients who have observed opacity in bilateral frosted glass density showing peripheral placement in the foreground, sub segmental consolidation or linear opacities, paving stone view, inverse halo sign were evaluated as typical findings; patients with concordant clinical complaints, even if they had radiologically atypical findings, were hospitalized. After the hospitalization of the patients, hematological parameters, biochemical parameters to include liver and kidney function tests, clotting parameters, ferritin, D-Dimer, troponin-i, CRP, and arterial blood gas parameters were analysed. The current parameters of the patients were repeated daily.