1. Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, Saint Paul
2. Department of Veterinary Medicine, University of Cambridge, United Kingdom
3. Minnesota Department of Health, Saint Paul
4. Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul
5. Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Minnesota, Saint Paul
6. Division of Environmental Health Sciences, School of Public Health, University of Minnesota, Minneapolis