1. Department of Forest and Wildlife Ecology, University of Wisconsin - Madison, 1630 Linden Drive, Madison, WI 53706, USA
2. US Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, Wisconsin 53711, USA
3. Present address: 4730 Toepfer Road, Middleton, Wisconsin 53562, USA.
4. Departments of Soil Science, Civil and Environmental Engineering, and Chemistry, University of Wisconsin – Madison, 1525 Observatory Drive, Madison, Wisconsin 53706, USA
5. Retired, US Geological Survey, Wisconsin Cooperative Wildlife Research Unit, University of Wisconsin – Madison, 204 Russell Labs, 1630 Linden Drive, Madison, WI 53706, USA