1. 1 Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC
2. 2 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL
3. 3 Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO
4. 4 Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University Columbus, OH
5. 5 Department of Clinical Sciences, Carlson College of Veterinary Medicine, Oregon State University, Corvallis, OR
6. 6 Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX
7. 7 Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA
8. 8 Department of Small Animal Clinical Sciences, Virginia Maryland College of Veterinary Medicine, Blacksburg, VA
9. 9 Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada