1. Fort Dodge; Veterinaria SA, C/Orense 4 28020 Madrid Spain
2. Veterinary Department; Cooperativa Castellana de Ganaderos; C/Ejido 10, Campo Real 28510 Madrid Spain
3. Preclinical and Clinical Development; Fort Dodge Animal Health; Europark/Eingang B3 Adenauerstr. 20 52146 Wurselen Germany