Pastuszak, Marianna
Kowalkowski, Tomasz http://orcid.org/0000-0001-8866-0246
Kopiński, Jerzy
Doroszewski, Andrzej
Jurga, Beata
Buszewski, Bogusław
Article History
Received: 14 June 2018
Accepted: 8 August 2018
First Online: 25 August 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The authors alone are responsible for the content and writing of this article.