1. Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, Georgia 30602, USA
2. Warnell School of Forestry and Natural Resources, University of Georgia, Athens, Georgia 30602, USA
3. US Geological Survey, National Wildlife Health Center, Madison, Wisconsin 53711, USA
4. Conserve Wildlife Foundation of New Jersey, PO Box 400, Trenton, New Jersey 08625, USA
5. Endangered and Nongame Species Program, New Jersey Division of Fish and Wildlife, Assunpink Wildlife Management Area, 1 Eldridge Road, Upper Freehold Township, Robbinsville, New Jersey 08691, USA
6. Agassiz National Wildlife Refuge, Middle River, Minnesota 56737, USA