Dammerer, Dietmar http://orcid.org/0000-0002-3212-4580
Fischer, Florian
Mayr, Raul
Giesinger, Johannes
El Attal, Rene
Liebensteiner, Michael C.
Article History
Received: 4 April 2018
Accepted: 13 August 2018
First Online: 22 August 2018
<!--Emphasis Type='Bold' removed-->Compliance with ethical standards
:
: The authors declare that they have no conflicts of interests.
: All procedures performed in studies involving human participants were in accordance with the ethics standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethics standards. The local ethics committee approved the present study.
: Informed consent was obtained from all participants included in the study.