Funding for this research was provided by:
Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg
Text and Data Mining valid from 2019-01-16
Received: 23 April 2018
Accepted: 10 January 2019
First Online: 16 January 2019
Ethics approval and consent to participate
: The project received ethical approval by the Medical Ethics Committee of the Medical Faculty Mannheim, Heidelberg University (2016-588 N-MA). All participants were advised that their participation was voluntary and written informed consent was obtained in each case.
: Not applicable.
: The authors declare that they have no competing interests.
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