Niewiadomski, W.
Palasz, E.
Skupinska, M.
Zylinski, M.
Steczkowska, M.
Gasiorowska, A.
Niewiadomska, G.
Riedel, G.
Article History
Received: 9 August 2016
Accepted: 22 November 2016
First Online: 16 December 2016
Competing interests
: The authors declare no competing financial interests.