Funding for this research was provided by:
Medical University of Vienna
Article History
Received: 3 July 2018
Accepted: 24 October 2018
First Online: 12 November 2018
Compliance with ethical guidelines
:
: S. Haider, I. Grabovac, and T.E. Dorner declare that they have no competing interests.
: This article does not contain any studies with human participants or animals performed by any of the authors. Ethical approval was not necessary as this is a secondary analysis of open access previously published datasets.