Balla, Jozef
Medveďová, Zuzana
Kalousek, Petr
Matiješčuková, Natálie
Friml, Jiří
Reinöhl, Vilém
Procházka, Stanislav
Article History
Received: 6 May 2016
Accepted: 3 October 2016
First Online: 8 November 2016
Competing interests
: The authors declare no competing financial interests.