| Affiliation: | 1. Marques de Valdecilla University Hospital, , Sandanter, Spain;2. Service of Preventive Medicine, University Hospital Ramón y Cajal, , Madrid, Spain;3. National Distance Education University (UNED), , Madrid, Spain;4. Carlos III Institute of Health, , Madrid, Spain;5. Center for Human and Social Sciences, Spanish National Research Council, , Madrid, Spain;6. Alzheimer Center Reina Sofia Foundation, Alzheimer Disease Research Unit, CIEN Foundation, Carlos III Institute of Health, , Madrid, Spain;7. REDISSEC, , Madrid, Spain |
