Affiliation: | 1. Department of Large Animal Clinical Sciences, The University of Tennessee College of Veterinary Medicine, 2407 River Dr., Knoxville, Tennessee 37996, USA;2. Department of Pathobiology, The University of Tennessee College of Veterinary Medicine, 2407 River Dr., Knoxville, Tennessee 37996, USA;3. Equine Department, Kansas State University, College of Veterinary Medicine, 101 Trotter Hall, Manhattan, Kansas 66506, USA |