1. Foreign Animal Disease Research Unit Agricultural Research Service U.S. Department of Agriculture Plum Island Animal Disease Center Greenport New York USA
2. Department of Diagnostic Medicine/Pathobiology College of Veterinary Medicine Kansas State University Manhattan Kansas USA
3. PIADC Research participation program Oak Ridge Institute for Science and Education Oak Ridge Tennessee USA
4. Department of Population Medicine and Diagnostic Sciences College of Veterinary Medicine Cornell University Ithaca New York USA
5. Pipestone Applied Research Pipestone Veterinary Services Pipestone Minnesota USA