1. Department of Clinical Sciences J. T. Vaughan Teaching Hospital, College of Veterinary Medicine Auburn University Auburn Alabama USA
2. Department of Pathobiology 166 Greene Hall, College of Veterinary Medicine Auburn University Auburn Alabama USA
3. Department of Clinical Sciences Wilford and Kate Bailey Small Animal Teaching Hospital College of Veterinary Medicine Auburn University Auburn Alabama USA
4. Department of Pathology College of Veterinary Medicine University of Georgia Athens Georgia USA