Grześ, Irena M.
Okrutniak, Mateusz
Gorzałczany, Monika
Piszczek, Piotr
Funding for this research was provided by:
Ministry of Science and Higher Education of the Republic of Poland
Article History
Received: 13 September 2018
Accepted: 6 March 2019
First Online: 7 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.