Funding for this research was provided by:
Medical Faculty of the Technical University of Munich, Germany (n.a.)
Text and Data Mining valid from 2019-02-08
Received: 25 January 2018
Accepted: 21 January 2019
First Online: 8 February 2019
Ethics approval and consent to participate
: The study has been approved by the Ethics Committee of the Faculty of Medicine at the Technical University of Munich, Germany (Project Number 5816/13). Students were informed about the study and gave their oral and written consent to participate.
: Not applicable.
: The authors declare that they have no competing interests.
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