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Wakker, Jonas
Kratzer, Wolfgang https://orcid.org/0000-0002-9727-3843
Graeter, Tilmann
Schmidberger, Julian
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Article History
Received: 24 October 2017
Accepted: 23 April 2018
First Online: 9 May 2018
Ethics approval and consent to participate
: The study was conducted in the agreement with the Declaration of Helsinki and with the approval of the Ethics Committee of the State Medical Chamber of Baden-Württemberg. Registration number: 07/15. Date: July 2015. The study included only participants who gave their consent by signing the consent form after an information about the study. Data were anonymised before analysis.
: The authors declare that they have no competing interests.
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