1. INIAV, I.P. National Institute of Agrarian and Veterinarian Research Oeiras Portugal
2. Centre for Interdisciplinary Research in Animal Health Faculty of Veterinary Medicine of Lisbon CIISA Lisboa Portugal
3. Instituto Universitario de Biotecnología de Asturias (IUBA) Departamento de Bioquímica y Biología Molecular Universidad de Oviedo Oviedo Spain