1. Marine Mammal Pathology Services, 19117 Bloomfield Road, Olney, Maryland 20832, USA
2. Department of Comparative, Diagnostic, and Population Medicine, College of Veterinary Medicine, University of Florida, 2015 SW 16th Avenue, Gainesville, Florida 32608, USA
3. Zoological Pathology Program, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, 3300 Golf Road, Maywood, Illinois 60153, USA
4. Fish and Wildlife Research Institute, Florida Fish and Wildlife Conservation Commission, 100 8th Avenue SE, St. Petersburg, Florida 33701, USA