Funding for this research was provided by:
Agentura Pro Zdravotnický Výzkum České Republiky (15-33369A)
Text and Data Mining valid from 2018-11-28
Received: 29 August 2018
Accepted: 22 November 2018
First Online: 28 November 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: For this type of study, formal consent is not required.