1. Department of Virology and Immunology; Maria Curie-Skłodowska University; Lublin Poland
2. Department of Veterinary Prevention and Avian Diseases; Institute of Biological Bases of Animal Diseases; University of Life Sciences; Lublin Poland
3. Virbac Consultant; Puteaux France
4. Virbac; Warszawa Poland
5. Virbac; Carros France