Zieniuk, Bartłomiej http://orcid.org/0000-0001-6344-8695
Fabiszewska, Agata http://orcid.org/0000-0002-4563-6649
Białecka-Florjańczyk, Ewa http://orcid.org/0000-0001-9587-4277
Article History
Received: 4 October 2019
Accepted: 8 November 2019
First Online: 16 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest. This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.