1. The Ohio State University Veterinary Medical Center The Ohio State University Columbus Ohio USA
2. Ryan Veterinary Hospital Unviersity of Pennsylvania Philadelphia Pennsylvania USA
3. Angell Animal Medical Center Boston Massachusetts USA
4. Texas A&M University Small Animal Teaching Hospital Texas A&M University College Station Texas USA
5. UF Small Animal Hospital University of Florida Gainesville Florida USA
6. NC State Veterinary Hospital North Carolina State University Raleigh North Carolina USA
7. The University of Minnesota Veterinary Medical Center University of Minnesota St. Paul Minnesota USA
8. University of Missouri Veterinary Health Center University of Missouri Columbia Missouri USA
9. VCA Canada Alta Vista Animal Hospital Ottawa Ontario Canada
10. Center for Biostatistics, Department of Biomedical Informatics, College of Medicine The Ohio State University Columbus Ohio USA