Olewnik, Łukasz http://orcid.org/0000-0002-6414-9504
Waśniewska, Anna
Polguj, Michał
Topol, Mirosław
Article History
Received: 19 December 2017
Accepted: 12 April 2018
First Online: 17 April 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.