1. Comparative Pain Research Program, Department of Clinical Sciences; College of Veterinary Medicine, North Carolina State University; 1060 William Moore Drive Raleigh North Carolina 27607 USA
2. Comparative Medicine Institute, North Carolina State University; Raleigh North Carolina 27695 USA
3. Department of Molecular Biomedical Sciences; College of Veterinary Medicine, North Carolina State University; 1060 William Moore Drive Raleigh North Carolina 27607 USA
4. Center for Pain Research and Innovation, University of North Carolina School of Dentistry; Chapel Hill North Carolina 27599 USA