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Authors
Leonhardt, Marja http://orcid.org/0000-0002-0528-3949
Aschenbrenner, Katja
Kreis, Martin E.
Lauscher, Johannes C.
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Article History
Received: 5 September 2017
Accepted: 24 May 2018
First Online: 7 June 2018
Ethics approval and consent to participate
: The ethics committee of the medical faculty Charité University Hospital Berlin approved the study (EA4/131/14). All study participants signed an informed consent.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
