Funding for this research was provided by:
Medical University of Graz
Received: 21 May 2018
Revised: 15 October 2018
Accepted: 14 November 2018
First Online: 1 December 2018
Compliance with ethical standards
: H.P. Dimai, S. Nehrer, A. Kurth, and A. Fahrleitner-Pammer have no conflicts of interest to disclose.R. Ljuhar, D. Ljuhar, and B. Norman are receiving salaries from BRAINCON.