Galata, Christian
Merx, Kirsten
Mai, Sabine
Gaiser, Timo
Wenz, Frederik
Post, Stefan
Kienle, Peter
Hofheinz, Ralf-Dieter
Horisberger, Karoline
Article History
Received: 22 January 2018
Accepted: 19 July 2018
First Online: 2 August 2018
Ethics approval and consent to participate
: The institutional review board reviewed and approved the protocol; the study was conducted in accordance with the Declaration of Helsinki.
: Not applicable
: The authors declare that they have no competing interests.
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