,
Jäger, Bernhard http://orcid.org/0000-0002-1908-086X
Haller, Paul Michael
Piackova, Edita
Kaff, Alfred
Christ, Günter
Schreiber, Wolfgang
Weidinger, Franz
Stefenelli, Thomas
Delle-Karth, Georg
Maurer, Gerhard
Huber, Kurt
Article History
Received: 2 May 2019
Accepted: 24 June 2019
First Online: 29 June 2019
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest.
: The study was performed according to the Helsinki declaration. The local ethics committee of the city of Vienna waived approval.
: The authors alone are responsible for the content and writing of the paper.