Funding for this research was provided by:
University of Innsbruck and Medical University of Innsbruck
Text and Data Mining valid from 2019-01-19
Received: 6 October 2018
Accepted: 28 November 2018
First Online: 19 January 2019
Compliance with Ethical Standards
: The Board for Ethical Questions in Science of the University of Innsbruck provided approval.
: The authors declare that they have no conflict of interest. Research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.