1. Faculty of Veterinary Sciences Universidad Antonio Nariño Bogotá Colombia
2. Department of Animal Pathology, Faculty of Veterinary Sciences Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2) Universidad de Zaragoza Zaragoza Spain
3. California Animal Health and Food Safety Laboratory System (CAHFS) University of California Davis San Bernardino CA USA
4. Laboratory of Veterinary Pathology and Pathobiology Faculty of Veterinary Sciences Universidad Nacional de Colombia Bogotá Colombia