Received: 22 January 2020
Accepted: 24 April 2020
First Online: 19 June 2020
Ethics approval and consent to participate
: The experimental protocol was designed according to the guidelines of the current European Directive (2010/63/EU) on the care and protection of animals used for scientific purposes and approved by the Animal Care and Use Committee of the University of Warmia and Mazury (Decision No. 2/2018; Olsztyn, Poland).
: Not applicable.
: The authors declare that they have no competing interests.