Funding for this research was provided by:
Medizinische Universität Graz
Text and Data Mining valid from 2019-08-14
Received: 16 March 2019
Accepted: 11 June 2019
First Online: 14 August 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.The authors have full control of all primary data and allow the journal to review this data if requested.