Kubinova, S.
Zaviskova, K.
Uherkova, L.
Zablotskii, V.
Churpita, O.
Lunov, O.
Dejneka, A.
Article History
Received: 30 January 2017
Accepted: 16 February 2017
First Online: 24 March 2017
Competing interests
: The authors declare no competing financial interests.