Kralova, Jarmila
Kolar, Michal
Kahle, Michal
Truksa, Jaroslav
Lettlova, Sandra
Balusikova, Kamila
Bartunek, Petr
Article History
Received: 11 October 2016
Accepted: 8 February 2017
First Online: 15 March 2017
Competing interests
: The authors declare no competing financial interests.