Petzl, Adrian http://orcid.org/0000-0002-8935-3560
Derndorfer, Michael
Kollias, Georgios
Moroka, Kgomotso
Aichinger, Josef
Pürerfellner, Helmut
Martinek, Martin
Article History
Received: 27 November 2019
Accepted: 18 February 2020
First Online: 6 March 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed were in accordance with the ethical standards of the national research committee (<i>Ethikkommission des Landes Oberösterreich (Ethics Commission of the State of Upper Austria)</i>, ethics committee vote reference number K-103-16) and with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study.