1. Barrington Animal Dental Referral, Barrington, IL, USA
2. Consultant in Veterinary Oral Medicine, Dixon, CA, USA
3. Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
4. Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi, USA
5. Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi, USA