1. Department and Clinic for Production Animals, University of Veterinary Medicine Budapest, Üllő, Hungary
2. Agricultural Biotechnology Institute of the National Agricultural Research and Innovation Centre, Gödöllő, Hungary
3. Veterinary Diagnostic Directorate, National Food Chain Safety Office (NFCSO), Budapest, Hungary
4. Institute for Veterinary Medical Research, Hungarian Academy of Sciences, Budapest, Hungary
5. Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Ghent, Belgium