1. Subdepartment of Clinical Diagnostics and Veterinary Dermatology Department and Clinic of Internal Animal Diseases Faculty of Veterinary Medicine University of Life Sciences in Lublin Lublin Poland
2. Department and Clinic of Animal Surgery Department and Clinic of Internal Animal Diseases Faculty of Veterinary Medicine University of Life Sciences in Lublin Lublin Poland
3. Subdepartment of Pathomorphology and Forensic Veterinary Medicine, Department and Clinic of Internal Animal Diseases, Faculty of Veterinary Medicine University of Life Sciences in Lublin Lublin Poland
4. Nicolaus Copernicus University in Torun Faculty of Biological and Veterinary Sciences Toruń Poland
5. Oftalabs Sp. z o.o. Wałbrzych Poland