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. 2021 Oct 5;11:19728. doi: 10.1038/s41598-021-99291-z

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© The Author(s) 2021

Open Access This 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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Screening and eligibility of clinical records. A total of 260 clinical files of SARS-CoV-2-positive patients were identified in three health centers in México. 201 met the inclusion criteria, while 61 met one or more exclusion criteria. In this way, 140 clinical files were included in the study, but 14 records were discontinued from further analysis as they belonged to critically-ill patients, and together did not render a statistically manageable sample.