Received: 5 July 2017
Accepted: 20 April 2018
First Online: 8 May 2018
Ethics approval and consent to participate
: The Ethical Review Board of Medical Faculty Mannheim, Heidelberg University, approved the study (2015-542 N-MA). All participants were orally informed about the study and received written information about the study, anonymity and voluntary participation on the questionnaire. Students could decline to fill out the questionnaire if they did not consent. Students who did not fill out the questionnaire were not identified or recognized. Therefore, we assume that participation was voluntarily.
: Dr. Kadmon serves on the journal’s Editorial Board as Associate Editor. All other authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.