1. Michigan State University College of Veterinary Medicine, 784 Wilson Rd., East Lansing, Michigan 48824, USA
2. Michigan Department of Natural Resources, Wildlife Disease Laboratory, 4125 Beaumont Rd., Lansing, Michigan 48910, USA
3. Michigan Department of Health and Human Services, 333 S Grand Ave., Lansing, Michigan 48933, USA
4. Michigan State University Veterinary Diagnostic Laboratory, 4125 Beaumont Rd., Lansing, Michigan 48910, USA
5. Wisconsin Veterinary Diagnostic Laboratory, University of Wisconsin, 445 Easterday Ln., Madison, Wisconsin 53706, USA
6. Wisconsin Department of Natural Resources, Division of Fish, Wildlife, and Parks, Wildlife Health Section, 101 S Webster St., PO Box 7921, Madison, Wisconsin 53707, USA
7. Minnesota Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Minnesota, 133 Gortner Ave., St. Paul, Minnesota 55108, USA
8. Minnesota Department of Natural Resources, Division of Fish and Wildlife, Wildlife Health Program, 5463C West Broadway, St. Paul, Minnesota 55025, USA