1. Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences Colorado State University Fort CollinsCO USA
2. Faculty of Veterinary and Agricultural Sciences, Translational Research and Animal Clinical Trial Study (TRACTS) Group The University of Melbourne Werribee Vic. Australia
3. Department of Veterinary Sciences University of Pisa Pisa Italy
4. Department of Veterinary Clinical Sciences, College of Veterinary Medicine University of Minnesota St. Paul MN USA
5. Department of Pathobiology and Population Sciences The Royal Veterinary College, University of London Hertfordshire UK