1. Department of Clinical Bacteriology and Mycology, The Kimron Veterinary
Institute, Bet Dagan, Israel, Copenhagen, Denmark
2. the National Service for Udder Health and Milk Quality, Israeli Dairy
Board, Caesarea, Israel, Copenhagen, Denmark
3. the Department of Veterinary Disease Biology, Faculty of Life Sciences,
University of Copenhagen; Copenhagen, Denmark
4. the Statens Serum Institut, Copenhagen, Denmark