1. School of Veterinary Medicine, Faculty of Veterinary Medicine and Agronomy Universidad de las Americas Concepción Chile
2. Faculty of Agricultury Sciences Universidad del Alba Chillán Chile
3. Manager of the Equine Tracer Center, Chilean Army Agreement –INDAP Municipality of Bulnes and San Carlos Ñuble Chile
4. Department of Animal Sciences, Faculty of Veterinary Science Universidad de Concepción Chillán Chile
5. Pathology Department, Faculty of Veterinary Science Universidad de Concepción Chillán Chile