Bień, K.
Sobańska, Z.
Sokołowska, J.
Bąska, P.
Nowak, Z.
Winnicka, A.
Krzyzowska, M.
Article History
Received: 13 August 2015
Accepted: 28 December 2015
First Online: 18 January 2016
Compliance with ethical standards
:
: The authors declare that there is no conflict of interests regarding the publication of this paper.