Received: 7 December 2019
Accepted: 2 April 2020
First Online: 10 April 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.The study procedure was approved by the Research Ethics Committee at the SWPS University of Social Sciences and Humanities in Katowice (Ref No: WKEB50/03/2018). Informed consent was obtained from all individual participants included in the study.
: Not applicable.
: The authors declare that they have no competing interests.