Konrad, Andreas
Tilp, Markus
Funding for this research was provided by:
University of Graz
Article History
Received: 11 September 2017
Accepted: 20 March 2018
First Online: 23 April 2018
Compliance with ethical guidelines
:
: A. Konrad and M. Tilp declare that they have no competing interests.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.