Kowalska, Małgorzata
Janas, Sławomir
Woźniak, Magdalena
Article History
Received: 30 September 2017
Accepted: 11 April 2018
First Online: 19 April 2018
Compliance with ethical standards
:
: This article does not contain any studies with human or animal subjects performed by any of the authors.
: Author Sławomir Janas is a member of “Radwag company, Radom - Poland” which supported the research.