1. Department of Pathobiology, Veterinary Diagnostic Laboratory, Michigan State University, 4125 Beaumont Road, Lansing, Michigan 48910, USA
2. Department of Veterinary Sciences, University of Wyoming, 1174 Snowy Range Road, Laramie, Wyoming 82070, USA
3. Pueblo Area Office, Colorado Parks and Wildlife, 600 Pueblo Reservoir Road, Pueblo, Colorado 81005, USA
4. Department of Microbiology, Immunology, and Pathology, Colorado State University, 1619 Campus Delivery, Fort Collins, Colorado 80523, USA
5. Wildlife Health Laboratory, Colorado Parks and Wildlife, 4330 Laporte Avenue, Fort Collins, Colorado 80521, USA