Funding for this research was provided by:
Medizinische Universität Wien
Text and Data Mining valid from 2019-04-26
Received: 25 November 2018
Accepted: 28 February 2019
First Online: 26 April 2019
Compliance with ethical standards
: Polina Lyatoshinsky none.Christian Fünfgeld none.Alexander Popov none.Vitaly Bezhenar none.Viktoria Krutova none.Daniela Ulrich none.Wolfgang Umek yes, Astella, acceptance of paid travel expenses.