Schmermund, Axel
Eckert, Joachim
Schmidt, Marco
Magedanz, Annett
Voigtländer, Thomas
Article History
Received: 22 June 2018
Accepted: 27 June 2018
First Online: 4 July 2018
Compliance with ethical standards
:
: The authors report no conflict of interest, neither scientific nor fincancial.