Schwedler, Christian
Häupl, Thomas
Kalus, Ulrich
Blanchard, Véronique
Burmester, Gerd-Rüdiger
Poddubnyy, Denis
Hoppe, Berthold http://orcid.org/0000-0002-0784-4017
Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (01EC1009A)
Article History
Received: 27 October 2017
Accepted: 8 February 2018
First Online: 14 March 2018
Ethics approval and consent to participate
: This study was approved by the ethics committee of Charité – Universitätsmedizin Berlin. Participants were included in the study after they provided informed consent.
: All authors had full access to all data and approved the final version of the manuscript for publication.
: The authors declare that they have no competing interests.
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