Davaris, Nikolaos http://orcid.org/0000-0003-0283-9216
Voigt-Zimmermann, Susanne
Kropf, Siegfried
Arens, Christoph
Article History
Received: 1 October 2018
Accepted: 14 December 2018
First Online: 19 December 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with animals performed by any of the authors. All procedures performed involving human participants were in accordance with the ethical standards of the institutional research committee (report no. 108/14) and with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study.