Funding for this research was provided by:
Vedecká Grantová Agentúra MŠVVaŠ SR a SAV (2/0009/19)
Received: 13 April 2021
Accepted: 24 May 2021
First Online: 2 July 2021
: The only participants in the research of the manuscript are the authors; the presented results are their work, and no other individuals are participating. All relevant data are including in the manuscript. It is a theoretical study, so ethical approval is not required. We declare no ethical issues.
: The authors declare no competing interests.