1. 1from the School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104
2. 2Southeastern Cooperative Wildlife Disease Study, College of Veterinary Medicine, University of Georgia, Athens, GA 30602
3. 3Arkansas Game and Fish Commission, Research, Evaluation, and Compliance Division, Little Rock, AR 72205
4. 4Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602.