Quehenberger, Julian
Pittenauer, Ernst
Allmaier, Günter
Spadiut, Oliver
Article History
Received: 24 October 2019
Accepted: 9 March 2020
First Online: 21 March 2020
Compliance with ethical standards
:
: The authors declare that they have no known competing financial interests or personal relationships that could have influenced the work reported in this paper.