1. Department of Clinical Neurophysiology Marqués de Valdecilla University Hospital Santander
2. Department of Physiology and Pharmacology University of Cantabria (UNICAN) Santander
3. Biomedical Research Institute (IDIVAL)
4. Department of Internal Medicine Marqués de Valdecilla University Hospital Santander
5. Department of Neurology Marqués de Valdecilla University Hospital Santander Spain