Received: 19 June 2020
Accepted: 25 May 2021
First Online: 7 June 2021
: The research was conducted according to the Declaration of Helsinki and after the positive opinion from the local Bioethics Committee at Collegium Medicum in Bydgoszcz (consent No. KB 382/2017). All subjects were informed about the purpose of the research and the procedures used, and voluntarily agreed to participate in the experiment.
: Not applicable.
: The authors declare no conflict of interest, financial or otherwise. The authors declare that the results of the study are presented clearly, honestly, and without fabrication, falsification or inappropriate data manipulation.