Author Affiliations +
Ed Stevens,1 Thomas P. Lipscomb,1 Frances M.D. Gulland2
1Department of Veterinary Pathology, Armed Forces Institute of Pathology, Bldg. 54, Room G117, 14th Street & Alaska Ave. NW, Washington, DC 20306, USA.
2The Marine Mammal Center, Marin Headlands, GGNRA, Sausalito, California 94965, USA.