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. 2021 Mar 25;11:6940. doi: 10.1038/s41598-021-85694-5

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© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Dynamic curves of percent lung opacities for initially asymptomatic patients with COVID-19. (a) COVID-19 lung opacities, generalized from 29 patients with sequential CTs. Percent COVID-19 lung involvement (black) and opacity subtypes, including GGO (blue) and consolidation (red) are shown. (b) Detailed curves showing total percent COVID-19 lung opacity and subtype (GGO and consolidation). The upper and lower bounds and error bars represent the standard deviations. Data points are shown at the 4 generalized time points where percent lung involvement was calculated and estimated.