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Authors
Strohmaier, Walter Ludwig http://orcid.org/0000-0001-8928-7105
Bonkovic-Őszi, Judit http://orcid.org/0000-0002-6566-8197
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Article History
Received: 26 January 2022
Accepted: 16 May 2022
First Online: 11 June 2022
Declarations
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: The authors have no competing interests to declare that are relevant to the content of this article. The authors did not receive support from any organization for the submitted work.
: This is an observational study. According to the laws in Germany, approval from an ethics committee is not needed, as it is a retrospective study based on completely anonymized data that cannot be traced back to individual patients. This study was exempt from approval by the Regiomed-Kliniken Institutional Review Board, as it used only deidentified patient data.
