Westhoff, Niklas
Siegel, Fabian
Peter, Christian
Hetjens, Svetlana
Porubsky, Stefan
Martini, Thomas
von Hardenberg, Jost
Michel, Maurice Stephan
Budjan, Johannes
Ritter, Manuel
Article History
Received: 28 April 2018
Accepted: 28 June 2018
First Online: 2 July 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: For this type of study formal consent is not required.