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Authors
Tomaszewski, Ryszard https://orcid.org/0000-0002-1628-0866
Kler, Jacek
Pethe, Karol
Zachurzok, Agnieszka
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Article History
Received: 18 March 2021
Accepted: 6 May 2021
First Online: 13 July 2021
Declarations
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: Ethical approval (PCN/022/KB/11/21) was waived by the local Ethics Committee of Silesian Medical University in Katowice (Poland) due to the retrospective nature of the study, and all the procedures being performed were part of the routine care. The consent obtained from study participants was written.
: The authors declare that they agree to the publication.
: The authors declare that they have no competing interests.
