1. Department of Applied Epidemiology, National Center for Epidemiology, Carlos III Institute of Health, Madrid, Spain
2. Consortium for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Madrid, Spain
3. Alzheimer Disease Research Unit, CIEN Foundation, Queen Sofia Foundation Alzheimer Center, Madrid, Spain
4. Chronic Disease Programme, Carlos III Institute of Health, Madrid, Spain