Lunov, Oleg
Zablotskii, Vitalii
Churpita, Olexander
Chánová, Eliška
Syková, Eva
Dejneka, Alexandr
Kubinová, Šárka
Article History
Received: 12 September 2014
Accepted: 3 November 2014
First Online: 20 November 2014
Competing interests
: The authors declare no competing financial interests.