Dudakova, Lubica
Palos, Michalis
Jirsova, Katerina
Stranecky, Viktor
Krepelova, Anna
Hysi, Pirro G
Liskova, Petra
Article History
Received: 3 September 2014
Revised: 21 January 2015
Accepted: 27 January 2015
First Online: 4 March 2015
Competing interests
: The authors declare no conflict of interest.