Baar, Wolfgang
Goebel, Ulrich
Buerkle, Hartmut
Jaenigen, Bernd
Kaufmann, Kai
Heinrich, Sebastian https://orcid.org/0000-0003-2942-0351
Article History
Received: 26 November 2018
Accepted: 11 March 2019
First Online: 18 March 2019
Ethics approval and consent to participate
: The local ethics committee approved the analysis and publication of the data and confirmed that no specific patient’s consent was necessary because of the anonymous and observational design of the study (approval number EK 555/17).Ethics Committee University of Freiburg, Germany Engelberger Straße 2,179,106 Freiburg.
: Not applicable.
: The authors declare that they have no competing interests.
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