Slachtova, Lenka
Seda, Ondrej
Behunova, Jana
Mistrik, Martin
Martasek, Pavel
Article History
Received: 9 December 2014
Revised: 9 July 2015
Accepted: 21 July 2015
First Online: 9 September 2015
Competing interests
: The authors declare no conflict of interest.
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