Article History
Received: 1 March 2020
Accepted: 21 July 2020
First Online: 14 August 2020
Ethics approval and consent to participate
: The tests were previously approved by the Bioethical Commission of the Chamber of Physicians in Opole. (Resolution No. 235 of 13 December 2016).The participants were informed about the purpose and course of tests and signed a consent to participate in the tests.
: Not Applicable.
: The authors declare that they have no competing interests.