Brągoszewska, Ewa
Pastuszka, Józef S.
Funding for this research was provided by:
Ministerstwo Nauki i Szkolnictwa Wyższego (BKM/533/RIE-2/2016)
Article History
Received: 22 May 2017
Accepted: 13 February 2018
First Online: 1 March 2018
Compliance with ethical standards
:
: The authors declare no conflict of interest.