1. Wildlife Health Center, School of Veterinary Medicine, University of California Davis, One Shields Ave., Davis, California 95616, USA
2. National Marine Fisheries Service, Southwest Fisheries Science Center, 7544 Sandholdt Rd., Moss Landing, California 95039, USA
3. California Animal Health and Food Safety Laboratory, University of California Davis, One Shields Ave., Davis, California 95616, USA
4. United States Geological Survey, National Wildlife Health Center, Hawaii Field Station, 300 Ala Moana Blvd., Room 5-231, Honolulu, Hawaii 96850, USA
5. National Marine Fisheries Service, Southwest Fisheries Science Center, 3333 North Torrey Pines Court, La Jolla, California 92037, USA