Mańczak, Małgorzata http://orcid.org/0000-0002-0736-0389
Pracoń, Grzegorz
Sudoł-Szopińska, Iwona
Gasik, Robert
Article History
Received: 2 August 2018
Revised: 24 June 2019
Accepted: 30 June 2019
First Online: 12 July 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.