Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Areas with abnormal density on the computed tomography images. Consolidation, homogeneous ground-glass opacity and reticulolinear shadows were scored as a ratio of the grid as follows: 0, normal; 1, abnormal area <1/4; 2, abnormal area ≥1/4 but <1/2; and 3, abnormal area ≥1/2.
