Institution: | 1. Department of Large Animal Medicine and Nutrition , Faculty of Veterinary Medicine , Yalelaan 16, P.O.Box 80152, Utrecht, 3508 SB, The Netherlands;2. Department of Pathology , Faculty of Veterinary Medicine , Yalelaan 1, P.O.Box 80158, Utrecht, 3508 SB, The Netherlands;3. Animal Health Service , Molenwijkseweg 48, Boxtel, 5282 SC, The Netherlands |