1. Department of Veterinary Diagnostic and Production Animal Medicine (VDPAM), College of Veterinary Medicine, Iowa State University, Ames, IA
2. Veterinary Diagnostic Laboratory (VDL), College of Veterinary Medicine, Iowa State University, Ames, IA
3. Rand Veterinary Services, Marshalltown, IA
4. Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS