Lesná, J
Tichá, A
Hyšpler, R
Musil, F
Bláha, V
Sobotka, L
Zadák, Z
Šmahelová, A
Article History
Received: 11 February 2015
Revised: 30 July 2015
Accepted: 16 September 2015
First Online: 2 November 2015
Competing interests
: The authors declare no conflict of interest.