1. U.S. Department of Agriculture; Animal and Plant Health Inspection Service; Wildlife Services; Fort Collins CO USA
2. U.S. Department of Agriculture; Food Safety Inspection Service; College Station TX USA
3. U.S. Department of Agriculture; Agricultural Research Service; Ames IA USA
4. Department of Veterinary Pathobiology; College of Veterinary Medicine & Biomedical Sciences; Texas A&M University; College Station TX USA
5. U.S. Department of Agriculture; Animal and Plant Health Inspection Service; Wildlife Services; Fort Worth TX USA
6. U.S. Department of Agriculture; Animal and Plant Health Inspection Service; Wildlife Services, National Wildlife Research Center; Fort Collins CO USA