1. MSD Animal Health; Salamanca Spain
2. Animal Health Department; Instituto de Ganadería de Montaña (CSIC-ULE); University of León; León Spain
3. Analitica Veterinaria; Vizcaya Spain
4. Centro de Investigación en Sanidad Animal (INIA-CISA); Valdeolmos Madrid Spain
5. Animal Health Department; University of León; León Spain