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. 2020 Mar 19:200843. doi: 10.1148/radiol.2020200843

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2020 by the Radiological Society of North America, Inc.

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Figure 2a. — Temporal change of the main CT patterns and the subtypes of ground-glass opacity. Stacked-bar graphs showed the distribution of the main patterns of lung abnormalities (a) and the subtypes of ground-glass opacity (b) on CT scans at various time points from symptom onset. Categories with percentage ≥ 20% are shown. GGO = ground-glass opacity