1. Department of Pathology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada N1G 2W1
2. National Veterinary Services Laboratories, Foreign Animal Diseases Diagnostic Laboratory, Greenport, New York 11944, USA
3. Oklahoma Animal Disease Diagnostic Laboratory, Oklahoma State University, Stillwater, Oklahoma 74078, USA
4. Mystic Marinelife Aquarium, 55 Coogan Boulevard, Mystic, Connecticut 06355, USA
5. New England Aquarium, Boston, Massachusetts 02110, USA
6. Okeanos Ocean Research Foundation, 278 East Montauk Highway, Hampton Bays, New York 11946, USA
7. Department of Biology, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1