Konarska, Agata http://orcid.org/0000-0003-2174-7608
Masierowska, Marzena http://orcid.org/0000-0003-0527-9779
Article History
Received: 31 July 2019
Accepted: 24 October 2019
First Online: 2 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.