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. 2021 Nov 24;100(47):e27980. doi: 10.1097/MD.0000000000027980

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Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.

This is an open access article distributed under the Creative Commons Attribution License 4.0 (CCBY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0

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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Timeline of COVID-19 treatment. The patient got mechanical ventilation from the second hospital day. After successful weaning off, he required oxygen supplementation. During the 10-session rehabilitation program, he could cut-off the oxygen successfully.