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. 2021 Dec 2;8:737039. doi: 10.3389/fmolb.2021.737039

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Copyright © 2021 Schmelter, Föh, Mallagaray, Rahmöller, Ehlers, Lehrian, von Kopylow, Künsting, Lixenfeld, Martin, Ragab, Meyer-Saraei, Kreutzmann, Eitel, Taube, Käding, Jantzen, Graf, Sina and Günther.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Study design and description of two sample cohorts. (i) A critically ill cohort from intensive care unit (COVID-19 and CS) and a non-hospitalized group (SARS-CoV-2 positive and negative).