1. Department of Clinical Sciences (Ohad, Baruch), The Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, P.O. Box 12, Rehovot, 76100, Israel
2. The Division of Pathology (Perl), The Kimron Veterinary Institute (KVI), P.O. Box 12, Beit Dagan, 50250, Israel
3. From the