1. Department of Clinical Studies, The University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, USA
2. Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA
3. Texas Veterinary Renal Pathology Service, Texas A&M University, College Station, TX, USA
4. Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Georgia, Athens, GA, USA