Co-Authors:
Yeruham, I., Hachaklait Gedera, 4 Hagoren Street, Gedera 70700, Israel
Sharir, B., Hachaklait, Kahal 12387, Israel
Friedman, S., National Service for Udder Health Caesaria, PO Box 3015, 38900 Caesaria, Israel, Koret School of Veterinary Medicine, Hebrew University of Jerusalem, PO Box 12, Rehovot 76100, Israel
Perl, S., Kimron Veterinary Institute, Bert Dagan 50250, Israel, Koret School of Veterinary Medicine, Hebrew University of Jerusalem, PO Box 12, Rehovot 76100, Israel