Franke, Axel http://orcid.org/0000-0002-5460-5377
Bieler, Dan
Wern, Rebecca
Trotzke, Tim
Hentsch, Sebastian
Kollig, Erwin
Article History
Received: 15 June 2017
Revised: 3 March 2018
Accepted: 20 March 2018
First Online: 23 March 2018
Compliance with ethical standards
:
: The authors declare that this research was not sponsored. The authors maintain full control of all primary data and declare no conflict of interest in relation to this work. None of the authors received financial support from any of the manufacturers of products mentioned in this article.