1. Neurology Department University Clinic Hospital Lozano Blesa Zaragoza Spain
2. Aragon Institute for Health Research (IIS Aragón) Zaragoza Spain
3. Neurology Department Hospital General de la Defensa Zaragoza Spain
4. Oncology Department Hospital Álvaro Cunqueiro Vigo Spain
5. Neurology Department Hospital Reina Sofía Tudela Spain