1. Wyoming Game and Fish Department, Box 3312, University Station, Laramie, Wyoming 82071, USA
2. Department of Veterinary Sciences, University of Wyoming, 1190 Jackson, Laramie, Wyoming 82070, USA
3. Wild Animal Disease Center, Department of Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado 80523, USA
4. Wyoming Game and Fish Department, Box 635, Lusk, Wyoming 82225, USA
5. Wyoming Game and Fish Department, 116B Four Corners Rd., Gillette, Wyoming 82716, USA