1. Department of Neurology; Hospital San Pedro de Alcántara; Cáceres Spain
2. CIBERNED; Department of Biochemistry and Molecular Biology and Genetics; Nursing College; Universidad de Extremadura; Cáceres Spain
3. Department of Immunology; Hospital San Pedro de Alcántara; Cáceres Spain
4. Department of Neurology; Hospital Universitario Infanta Cristina; Badajoz Spain