1. Population Health and Reproduction School of Veterinary Medicine School of Medicine University of California Davis CA
2. Department of Biomedical Sciences Section of Anatomic Pathology Cornell University College of Veterinary Medicine Ithaca NY
3. Pathology, Microbiology and Immunology School of Veterinary Medicine University of California Davis CA
4. Department of Clinical Sciences Cornell University College of Veterinary Medicine Ithaca NY
5. Department of Veterinary Population Medicine, College of Veterinary Medicine University of Minnesota St. Paul MN