Article History
Received: 11 December 2017
Accepted: 23 April 2018
First Online: 7 May 2018
Compliance with Ethical Standards
:
: Author A. Stachniuk declares that she has no conflict of interest. Author A. Szmagara declares that she has no conflict of interest. Author E.A. Stefaniak declares that she has no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Not applicable.