Funding for this research was provided by:
Vedecká Grantová Agentúra MŠVVaŠ SR a SAV (No. 2/0039/16)
Article History
Received: 27 November 2018
Accepted: 24 April 2019
First Online: 11 May 2019
Compliance with ethical standards
:
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.