Affiliation: | 1. Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California;2. Department of Clinical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, Oregon;3. Veterinary Specialty Group, West Sacramento, California;4. Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois, Urbana, Illinois |