1. Department of Commodity Science and Animal Improvement, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 5, 10-719 Olsztyn, Poland.
2. Department of Landscape Management, Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, Studentska St. 13, 370-05 Ceske Budejovice, Czech Republic.
3. Department of Fur-Bearing Animal Breeding and Game Management, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 5, 10-719 Olsztyn, Poland.
4. Department of Wildlife, Sustainability and Ecosystem Sciences, Tarleton State University, Stephenville, Texas Box T-0050, Stephenville, TX 76402, USA.
5. Department of Pathological Anatomy, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 13, 10-719 Olsztyn, Poland.