Received: 5 November 2020
Accepted: 31 March 2021
First Online: 3 May 2021
: The Bioethical Committee of the Medical University of Silesia in Katowice issued a resolution No. KNW / 0022 / KB1 / 94 / I / 18/19 on consenting to the conduct of a medical and research experiment. The study participants gave their written consent to participate in the study, as recommended by the Bioethics Committee.
: The oral consent of the study participants was obtained for publication of the results, as agreed by the Bioethics Committee. The authors of the publication also gave only verbal consent to publish the work in the Journal.
: The authors declare that they have no competing interests.