1. Department of Pathology College of Veterinary Medicine University of Georgia Athens GA USA
2. Department of Pathobiology and Population Medicine College of Veterinary Medicine Mississippi State University Stoneville MS USA
3. Department of Basic Sciences College of Veterinary Medicine Mississippi State University Stoneville MS USA
4. School of Fisheries, Aquaculture, and Aquatic Sciences Auburn University Auburn AL USA
5. New Hampshire Veterinary Diagnostic Laboratory Department of Molecular, Cellular, and Biomedical Sciences University of New Hampshire Durham NH USA