1. Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
2. Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
3. Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
4. School of Veterinary Medicine, Texas Tech University, Amarillo, Texas, USA
5. Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, Michigan, USA