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Article History
Received: 28 September 2019
Accepted: 1 July 2020
First Online: 6 July 2020
Ethics approval and consent to participate
: The authors obtained consent no. 2017/02/16/6 of the Bioethics Committee of the Beskidzka Regional Chamber of Physicians in Bielsko-Biala. All of the included participants were informed about the study and agreed to participate in written form.
: Not applicable. The manuscript does not contain data from any individual person.
: The authors declare that they have no competing interests.