1 Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, 1052 William Moore Drive, Raleigh, NC 27607, USA. Electronic address: denis_marcellin@ncsu.edu.
2 Department of Physical Therapy, University of Tennessee at Chattanooga, 615 McCallie Avenue, Chattanooga, TN 37403, USA. Electronic address: David-Levine@utc.edu.
3 Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, 2407 River Drive, Knoxville, TN 37996, USA. Electronic address: dmillis@utk.edu.