Gancar, Miroslav
Kurin, Elena
Bednarikova, Zuzana
Marek, Jozef
Mucaji, Pavel
Nagy, Milan
Gazova, Zuzana
Article History
Received: 26 November 2019
Accepted: 6 May 2020
First Online: 4 June 2020
Competing interests
: The authors declare no competing interests.