1. Faculty of Veterinary Medicine; Ghent University; Merelbeke Belgium
2. IRTA; Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB); Universitat Autònoma de Barcelona; Bellaterra Spain
3. Vetsuisse Faculty; Institute of Veterinary Bacteriology; University of Bern; Bern Switzerland
4. Departament de Sanitat i Anatomia Animals; Facultat de Veterinària; Universitat Autònoma de Barcelona; Bellaterra Spain
5. Department of Veterinary Population Medicine; College of Veterinary Medicine; University of Minnesota; St. Paul MN USA