1. Research Unit of Epidemiology and Risk Analysis Applied to the Veterinary Sciences, Fundamental and Applied Research for Animals and Health, Department of Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, University of Liege, Liege, Belgium
2. Progenus s.a., Gembloux, Belgium
3. Animal and Microbial Biology Unit, Gembloux Agro-Bio Tech, University of Liege, Liege, Belgium
4. Unit of Integrated Veterinary Research, Department of Veterinary Medicine, University of Namur, Namur, Belgium
5. ARSIA, Animal Health Department, Ciney, Belgium