1. Animal Disease Diagnostic Laboratory, Purdue University, West Lafayette, IN
2. Diagnostic Center for Population and Animal Health, Michigan State University, East Lansing, MI
3. Washington Animal Disease Diagnostic Laboratory, Washington State University, Pullman, WA
4. Marshfield Clinic Laboratories Veterinary Services, Marshfield, WI
5. Veterinary Diagnostic Laboratory, University of Nebraska, Lincoln, NE
6. Prairie Diagnostic Services Inc., Saskatoon, Saskatchewan, Canada
7. National Centre for Foreign Animal Diseases, Canadian Food Inspection Agency, Winnipeg, Canada
8. Department of Pathobiology and Clinical Studies, New Bolton Center, University of Pennsylvania, Kennett Square, PA
9. Department of Veterinary Science and Microbiology, University of Arizona, Tucson, AZ
10. Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO
11. Animal Disease Research and Diagnostic Laboratory, South Dakota State University, Brookings, SD
12. National Centre for Foreign Animal Diseases, Canadian Food Inspection Agency
13. Department of Pathobiological Sciences, Louisiana State University, Baton Rouge, LA
14. Department of Pathobiology, University of Illinois, Champaign, IL