Steven S. TrostleDepartment of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706-1102. Present address is San Luis Rey Equine Hospital, 4211 Holly Lane, Bonsall, CA 92003.
A. James CooleyDepartment of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706-1102. Present address is Rollins Animal Disease Diagnostic Laboratory, PO Box 12223, Raleigh, NC 27605.