Damková, Jana
Chvátal, Lukáš
Ježek, Jan
Oulehla, Jindřich
Brzobohatý, Oto
Zemánek, Pavel
Article History
Received: 14 May 2017
Revised: 22 September 2017
Accepted: 25 September 2017
First Online: 14 November 2017
Competing interests
: The authors declare no conflict of interest.