Hrynko, Izabela
Łozowicka, Bożena
Kaczyński, Piotr
Article History
Received: 17 October 2017
Accepted: 20 February 2018
First Online: 8 March 2018
Compliance with Ethical Standards
:
: Izabela Hrynko declares that she has no conflict of interest. Bożena Łozowicka declares that she has no conflict of interest. Piotr Kaczyński declares that he 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.