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Authors
Pfefferkorn, Thomas https://orcid.org/0000-0002-7072-0295
Röther, Joachim
Eckert, Bernd
Janssen, Hendrik
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Article History
Received: 10 August 2020
Revised: 20 August 2020
Accepted: 24 August 2020
First Online: 28 August 2020
Compliance with ethical standards
:
: None.
: Our regional review board (state medical association of Bavaria, Germany) informed us that formal ethical approval and patient consent are not necessary for this retrospective and anonymous analysis of cases with completed treatment.
