Strakas, Dimitrios http://orcid.org/0000-0003-0117-7193
Gutknecht, Norbert
Article History
Received: 5 March 2018
Accepted: 28 May 2018
First Online: 26 June 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.