Fuehner, Thomas
Benden, Christian
Gottlieb, Jens
Article History
Received: 2 November 2018
Accepted: 24 December 2018
First Online: 15 March 2019
Compliance with ethical standards
:
: The authors have no conflicts of interest in respect to this article.
: An approval by an ethics committee was not applicable.
Free to read: This content has been made available to all.