Received: 16 August 2020
Accepted: 17 January 2021
First Online: 29 January 2021
Ethics approval and consent to participate
: The study was conducted in accordance with the current laws of Poland under the permissions of the Bioethical Commissions and the Regional Environmental Protection Directorates in Bydgoszcz, Lodz and Olsztyn.
: Not applicable.
: The authors declare that they have no competing interests.