Grzesiak, Barbara http://orcid.org/0000-0003-0551-3238
Kołodziej, Barbara
Głowacka, Anna
Krukowski, Henryk
Article History
Received: 23 November 2017
Accepted: 18 January 2018
First Online: 27 January 2018
Compliance with Ethical Standards
:
: The authors report no conflicts of interest. The authors alone are responsible for the content and the writing of the paper.