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Authors
Pilz, Georg
Sakic, Irma
Wipfler, Peter
Kraus, Jörg
Haschke-Becher, Elisabeth
Hitzl, Wolfgang
Trinka, Eugen
Harrer, Andrea https://orcid.org/0000-0001-7717-6125
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Article History
Received: 18 November 2019
Accepted: 16 January 2020
First Online: 24 February 2020
Ethics approval and consent to participate
: This retrospective study was approved by the local ethics committee of Salzburg (415-E/2430/3-2018).
: Not applicable.
: The authors declare that they have no competing interests.
