Pförringer, Dominik
Mayer, Regina
Meisinger, Christa
Freuer, Dennis
Eyer, Florian
Article History
Received: 25 April 2018
Accepted: 30 July 2018
First Online: 23 August 2018
Ethics approval and consent to participate
: The survey was reviewed and approved by the Ethics Committee of the Faculty of Medicine of the Technical University of Munich (number: 555 / 15S).
: Not applicable.
: The authors declare that they have no competing interests.
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