Institution: | 1. College of Veterinary Medicine, Auburn University, Auburn, AL;2. College of Veterinary Medicine, Michigan State University, East Lansing, MI;3. USDA Agricultural Research Service, National Animal Disease Center, Ames, IA;4. Boehringer Ingelheim (Canada) Ltd, Burlington, ON, Canada;5. College of Veterinary Medicine, Oklahoma State University, Stillwater, OK;6. College of Veterinary Medicine and Biological Sciences, Colorado State University, Fort Collins, CO |