1. Marine Wildlife Veterinary Care and Research Center, California Department of Fish and Wildlife, Office of Spill Prevention and Response, 151 McAllister Way, Santa Cruz, California 95060, USA
2. Karen C. Drayer Wildlife Health Center, School of Veterinary Medicine, University of California, One Shields Avenue, Davis, California 95616, USA
3. US Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, 4101 Laporte Avenue, Fort Collins, Colorado 80521, USA
4. Department of Pathology, Microbiology and Immunology, University of California, One Shields Avenue, Davis, California 95616, USA
5. The Marine Mammal Center, 2000 Bunker Road, Fort Cronkhite, Sausalito, California 94965, USA
6. Monterey Bay Aquarium, 886 Cannery Row, Monterey, California 93940, USA
7. University of New Hampshire, New Hampshire Veterinary Diagnostic Laboratory, 21 Botanical Lane, Durham, New Hampshire 03824, USA