Staleva, Hristina
Komenda, Josef http://orcid.org/0000-0003-4588-0382
Shukla, Mahendra K
Šlouf, Václav
Kaňa, Radek http://orcid.org/0000-0001-5768-6902
Polívka, Tomáš
Sobotka, Roman
Article History
Received: 17 September 2014
Accepted: 13 January 2015
First Online: 23 February 2015
Competing interests
: The authors declare no competing financial interests.