1. New Hampshire Veterinary Diagnostic Laboratory, University of New Hampshire, Durham, NH, USA
2. Veterinary Diagnostic Laboratory, Michigan State University, East Lansing, MI, USA
3. Washington Animal Disease Diagnostic Laboratory, Washington State University, Pullman, WA, USA
4. California Animal Health and Food Safety Laboratory, University of California, Davis, CA, USA
5. Northwest ZooPath, Monroe, WA, USA