1. Department of Microbiology and Immunology, Baker Institute for Animal Health, College of Veterinary Medicine Cornell University Ithaca New York
2. Center for Vaccines and Immunity Research Institute at Nationwide Children's Hospital Columbus Ohio
3. Department of Clinical Sciences, College of Veterinary Medicine Cornell University Ithaca New York
4. New York State Animal Health Diagnostic Center Cornell University Ithaca New York
5. Department of Clinical Sciences, College of Veterinary Medicine Kansas State University Manhattan Kansas
6. Department of Large Animal Clinical Sciences, College of Veterinary Medicine Michigan State University East Lansing Michigan
7. Department of Veterinary Clinical Medicine, College of Veterinary Medicine University of Illinois Urbana Illinois
8. Department of Veterinary Clinical Sciences Oklahoma State University Stillwater Oklahoma
9. Department of Veterinary Medicine and Surgery, College of Veterinary Medicine University of Missouri Columbia Missouri
10. Department of Veterinary Clinical Sciences, College of Veterinary Medicine Purdue University West Lafayette Indiana
11. Department of Clinical Sciences Oregon State University Corvallis Oregon
12. Oklahoma Equine Hospital Washington Oklahoma
13. Tryon Equine Hospital Columbus North Carolina
14. Equine Medicine Specialists of South Florida Wellington Florida
15. Oakridge Equine Hospital Edmond Oklahoma
16. Lloyd Veterinary Medical Center Iowa State University Ames Iowa
17. Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine Cornell University Ithaca New York