Funding for this research was provided by:
Ministerstvo Školství, Mládeže a Tělovýchovy (PROGRES-Q27/LF1)
Research Center for Informatics (CZ.02.1.01/0.0/0.0/16_019/0000765)
Text and Data Mining valid from 2019-03-11
Received: 16 January 2019
Revised: 28 February 2019
Accepted: 5 March 2019
First Online: 11 March 2019
Compliance with ethical standards
: The authors report no conflicts of interest.
: Each participant provided written, informed consent. The study received approval from an ethical standards committee on human experimentation, and has, therefore, been performed in accordance with the ethical standards established in the 1964 Declaration of Helsinki.