Funding for this research was provided by:
ITMS (26220220187)
Agentúra na Podporu Výskumu a Vývoja (APVV-15-0161)
VEGA (2/0098/17, 1/0206/18)
Article History
Received: 9 January 2018
Revised: 9 March 2018
Accepted: 10 April 2018
First Online: 13 April 2018