Schmitz, Paul http://orcid.org/0000-0002-2866-1279
Baumann, Florian
Acklin, Yves P.
Gueorguiev, Boyko
Nerlich, Michael
Grechenig, Stephan
Müller, Michael Bernd
Article History
Received: 14 January 2018
Accepted: 13 May 2018
First Online: 21 May 2018
Compliance with ethical standards
: In accordance with the 1964 Helsinki Declaration, the local institutional review board approved the study (IRB-Number 15-101-0092).