This article is available in open access under Creative Common Attribution-Non-Commercial-No Derivatives 4.0 International (CC BY-NC-ND 4.0) license, allowing to download articles and share them with others as long as… Click to show full abstract
This article is available in open access under Creative Common Attribution-Non-Commercial-No Derivatives 4.0 International (CC BY-NC-ND 4.0) license, allowing to download articles and share them with others as long as they credit the authors and the publisher, but without permission to change them in any way or use them commercially. Cardiology Journal 2023, Vol. 30, No. 1, 163–164 DOI: 10.5603/CJ.a2022.0114 Copyright © 2023 Via Medica ISSN 1897–5593 eISSN 1898–018X LETTER TO THE EDITOR COVID-19
               
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