Frynta, Daniel
Jančúchová-Lásková, Jitka
Frýdlová, Petra http://orcid.org/0000-0001-9385-9743
Landová, Eva
Article History
Received: 26 September 2017
Accepted: 9 January 2018
First Online: 8 February 2018
Competing Interests
: The authors declare no competing interests.