Funding for this research was provided by:
VEGA, Scientific Grant Agency of the Ministry of Education, science, research and sport of the Slovak Republic and the Slovak Academy of Sciences (2/0097/16, 2/0097/16)
Article History
Received: 6 May 2019
Revised: 10 October 2019
Accepted: 31 December 2019
First Online: 29 January 2020
Compliance with ethical standards
:
: Experiments comply with the current laws of the Slovak Republic.