| Affiliation: | 1. Epidemiology Unit, Animal Health Trust, Lanwades Park, Kentford, Newmarket, Suffolk CB8 0NG, UK;2. Hoechst Roussel Vet, Walton Manor, Walton, Milton Keynes, Bucks MK7 7AJ, UK;1. Department of Veterinary Clinical Studies, Veterinary Informatics and Epidemiology, University of Glasgow, Glasgow G61 1QH, UK;2. Department of Statistics and Modelling Science, University of Strathclyde, Glasgow G1 1XW, UK;3. Facultad de Medicina Veterinaria UNMSM, Apartado 03-5113 Correo de Salamanca, Lima 03, Peru;4. Centre for Preventive Medicine, Animal Health Trust, Newmarket CB8 7DW, UK;1. Division of Veterinary and Biomedical Sciences, Murdoch University, Western Australia;2. Department of Veterinary Anatomy and Pathology, The University of Sydney;3. Department of Veterinary Clinical Sciences, The University of Sydney |
