Sikora, Justyna http://orcid.org/0000-0002-3413-2621
Wróblewska-Czech, Agnieszka
Smycz-Kubańska, Marta
Mielczarek-Palacz, Aleksandra
Cygal, Anna
Witek, Andrzej
Kondera-Anasz, Zdzisława
Article History
Received: 25 October 2017
Accepted: 14 March 2018
First Online: 23 March 2018
Compliance with ethical standards
:
: None of the authors has any proprietary, financial, professional or other personal interest of any nature or kind in any product, service and/or company in the subject matter or materials discussed in this manuscript.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The design of the study was approved by Ethics Committee of the Medical University of Silesia in Katowice, Poland (KNW/0022/KB/123/14).