Funding for this research was provided by:
Grantová Agentura České Republiky (17-12800S)
Text and Data Mining valid from 2020-01-13
Received: 22 October 2019
Accepted: 6 January 2020
First Online: 13 January 2020
Compliance with ethical standards
: On behalf of all authors, the corresponding author states that there is no conflict of interest.