1. Departments of Neurology, Koret School of Veterinary Medicine; The Hebrew University of Jerusalem; Rehovot 76100 Israel
2. Small Animal Internal Medicine, Koret School of Veterinary Medicine; The Hebrew University of Jerusalem; Rehovot 76100 Israel
3. Teaching Services Unit, Koret School of Veterinary Medicine; The Hebrew University of Jerusalem; Rehovot 76100 Israel