1. Department of Neurology, Torrejon University Hospital, 28850 Madrid, Spain
2. School of Medicine, Universidad Francisco de Vitoria, 28223 Madrid, Spain
3. Research Group in Environmental Factors of Neurodegenerative Diseases, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), 28040 Madrid, Spain
4. Department of Neurology, Getafe University Hospital, 28905 Madrid, Spain
5. Department of Radiology, Torrejon University Hospital, 28850 Madrid, Spain