1. Polish Association of Small Animal Veterinarians, 20-612 Lublin, Poland
2. Clinic of Internal Medicine, Department of Internal Diseases of Farm Animals and Horses, Faculty of Veterinary Medicine University of Life Sciences in Lublin, 20-612 Lublin, Poland
3. Radiology and Ultrasound Laboratory, Department of Surgery, Faculty of Veterinary Medicine University of Life Sciences in Lublin, 20-612 Lublin, Poland
4. Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine University of Life Sciences in Lublin, 20-612 Lublin, Poland