1. North Carolina State University, College of Veterinary Medicine Raleigh North Carolina USA
2. Louisiana State University, School of Veterinary Medicine Baton Rouge Louisiana USA
3. Tufts University, Cummings School of Veterinary Medicine North Grafton Massachusetts USA
4. University of Wisconsin, School of Veterinary Medicine Madison Wisconsin USA
5. University of Liverpool, Small Animal Teaching Hospital Liverpool UK
6. Cornell University, College of Veterinary Medicine Ithaca New York USA