Authors
Iwona Markowska-Daniel
Department of Swine Diseases, National Veterinary Research Institute, 1Veterinary Clinic Agrobiovet, Pulawy
Kinga Urbaniak
Department of Swine Diseases, National Veterinary Research Institute, Pulawy, Poland
Aandrzej Kowalczyk
Department of Swine Diseases, National Veterinary Research Institute, Pulawy, Poland