Authors
Bartłomiej Tykałowski
bartlomiej.tykalowski@uwm.edu.pl
Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury, Olsztyn, Poland
Andrzej Koncicki
Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury, Olsztyn, Poland