1. Alaska Department of Fish and Game, Division of Wildlife Conservation, 1300 College Road, Fairbanks, Alaska 99701-1551, USA
2. Alaska Department of Environmental Conservation, Office of the State Veterinarian, 5251 Dr. Martin Luther King, Jr. Avenue, Anchorage, Alaska 99507, USA
3. Washington Animal Disease Diagnostic Laboratory, Washington State University, PO Box 647034, Pullman, Washington 99164, USA