1. William R Pritchard Veterinary Medical Teaching Hospital, University of California Davis, Davis, CA, USA
2. Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
3. Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
4. MarQueen Pet Emergency and Specialty Group, Roseville, CA, USA