Figure 1 Chest X-ray images of 3 COVID-19-positive patients with different intensity of lung involvement assessed with SARI scoring system. In the left picture both lungs present no radiological signs of parenchymal involvement and were assessed as 1 with SARI scoring system; in the middle picture multifocal consolidations can be spotted and the image was assessed as 4 with SARI scoring system; in the right image nearly entire parenchyma of both lungs present diffuse alveolar changes and the image was assessed as 5 with SARI scoring system.