1. Alzheimer's Disease and Other Cognitive Disorders Unit, Neurology Service, Hospital Clinic, Barcelona, Spain
2. Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
3. Memory Unit. Neurology Service. Hospital Santa Creu i Sant Pau, Barcelona, Spain
4. Hospital de Mollet del Vallés, Barcelona, Spain
5. Lipid Clinic, Endocrinology and Nutrition Service, Hospital Clínic, Barcelona, Spain