1 Department of Small Animal Clinical Sciences, Michigan State University, College of Veterinary Medicine, East Lansing, Michigan, USA.
2 Department of Small Animal Clinical Sciences, Texas A&M University, College of Veterinary Medicine and Biomedical Sciences, College Station, Texas, USA.
3 Department of Clinical Sciences, Colorado State University, College of Veterinary Medicine and Biomedical Sciences, Fort Collins, Colorado, USA.
4 Department of Clinical Sciences and Advanced Medicine, University of Pennsylvania, School of Veterinary Medicine, Philadelphia, Pennsylvania, USA.
5 Department of Biomedical and Diagnostic Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, Tennessee, USA.
6 Ocean State Veterinary Specialists, East Greenwich, Rhode Island, USA.
7 Department of Veterinary Clinical Sciences, Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA.
8 Department of Small Animal Medicine, University of Leipzig, College of Veterinary Medicine, Leipzig, Germany.
9 Internal Medicine Department, Animal Specialty Center, Yonkers, New York, USA.
10 Department of Medical Sciences, University of Wisconsin, School of Veterinary Medicine, Madison, Wisconsin, USA.
11 Mobile Veterinary Diagnostics, Orlando, Florida, USA.
12 Department of Clinical Science, Tufts University, Cummings School of Veterinary Medicine, North Grafton, Massachusetts, USA.
13 Cornell University Veterinary Specialists, Stamford, Connecticut, USA.
14 Department of Veterinary Medicine and Epidemiology, University of California - Davis, School of Veterinary Medicine, Davis, California, USA.
15 Veterinary Information Network, Davis, California, USA.
16 Department of Specialty Medicine, Midwestern University, College of Veterinary Medicine, Glendale, Arizona, USA.
17 Ethos Veterinary Health, San Diego, California, USA.