1. Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762
2. U.S. Geological Survey National Wildlife Health Center, Madison, WI 53711
3. National Wildlife Research Center, Wildlife Services, Animal and Plant Health Inspection Service, United States Department of Agriculture, Fort Collins, CO 80521
4. Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210
5. Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762
6. Mississippi Field Station, National Wildlife Research Center, Wildlife Services, Animal and Plant Health Inspection Service, United States Department of Agriculture, Mississippi State, MI 39762