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. 2020 May 8;297(1):E232–E235. doi: 10.1148/radiol.2020201697

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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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Flowchart of patient inclusion. COVID-19 = coronavirus disease 2019, RT-PCR = reverse-transcription polymerase chain reaction.