Matusiak, Jakub
Grządka, Elżbieta
Paszkiewicz, Małgorzata
Patkowski, Jacek
Funding for this research was provided by:
Maria Curie-Sklodowska University in Lublin
Article History
Received: 4 January 2019
Revised: 26 February 2019
Accepted: 28 February 2019
First Online: 30 March 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.