1. Department of Population Health and Pathobiology, College of Veterinary Medicine North Carolina State University Raleigh North Carolina
2. Federal Center for Animal Health (FGBI ARRIAH) Vladimir Russia
3. VISAVET Health Surveillance Center Universidad Complutense Madrid Spain
4. Departamento de Sanidad Animal, Facultad de Veterinaria Universidad Complutense Madrid Spain
5. Department of Veterinary Population Medicine University of Minnesota St. Paul Minnesota