1. School of Veterinary Medicine, University of Wisconsin–Madison, WI, USA
2. Dentistry and Oral Surgery Service, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA
3. Veterinary Dentistry and Oral Surgery, Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin–Madison, WI, USA
4. Zoological Medicine, Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin–Madison, WI, USA
5. Milwaukee County Zoo, Milwaukee, WI, USA