1. Department of Comparative and Basic Sciences; Royal Veterinary College; Hatfield UK
2. Clinical Development; Novartis Animal Health Inc.; Basel Switzerland
3. Department of Food Safety and Infection Biology; The Norwegian School of Veterinary Science; Oslo Norway
4. UMR 1331 Toxalim INRA/INP/UPS; Ecole Nationale Vétérinaire de Toulouse; Toulouse France