Chroma, K
Mistrik, M
Moudry, P
Gursky, J
Liptay, M
Strauss, R
Skrott, Z
Vrtel, R
Bartkova, J
Kramara, J
Bartek, J
Article History
Received: 6 June 2016
Revised: 14 August 2016
Accepted: 12 September 2016
First Online: 14 November 2016
Competing interests
: The authors declare no conflict of interest.