Helbig, Grzegorz http://orcid.org/0000-0003-3703-1268
Wieczorkiewicz-Kabut, Agata
Markiewicz, Mirosław
Krzemień, Helena
Wójciak, Michał
Białas, Krzysztof
Kopera, Małgorzata
Rzenno, Ewa
Woźniczka, Krzysztof
Kopińska, Anna
Grygoruk-Wiśniowska, Iwona
Koclęga, Anna
Article History
Received: 14 November 2018
Accepted: 2 January 2019
First Online: 8 January 2019
Compliance with ethical standards
:
: The authors have no competing interest.