Białek, Marzena http://orcid.org/0000-0003-3926-3337
Fryga, Julia
Spaleniak, Grzegorz http://orcid.org/0000-0003-3054-5469
Dziuk, Błażej
Funding for this research was provided by:
University of Opole
Article History
Received: 23 October 2020
Accepted: 12 January 2021
First Online: 5 February 2021
Compliance with ethical standards
:
: The authors declare that the is no conflicts of interest regarding publication of this paper.