Mistrik, Martin
Vesela, Eva
Furst, Tomas
Hanzlikova, Hana
Frydrych, Ivo
Gursky, Jan
Majera, Dusana
Bartek, Jiri
Article History
Received: 22 October 2015
Accepted: 10 December 2015
First Online: 18 January 2016
Competing interests
: The authors declare no competing financial interests.