1. Alaska Veterinary Pathology Services, Eagle River, Alaska 99577, USA
2. NOAA, NMFS, AFSC, Marine Mammal Laboratory, Seattle, Washington 98115, USA
3. Best Friends Animal Society, 5001 Angel Canyon Road, Kanab, Utah 84741, USA
4. Department of Anatomy and Neurobiology, Northeast Ohio Medical University, Rootstown, Ohio 44272, USA
5. Broad Conservation, 16607 Eleonora St., Eagle River, Alaska 99577, USA
6. California Animal Health & Food Safety Laboratory System, School of Veterinary Medicine, University of California, Davis, California 95616, USA
7. Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32608, USA