1. Memory Disorders Unit Department of Neurology Hospital Universitari Mutua de Terrassa Terrassa Spain
2. Fundació per a la Recerca Biomèdica i Social Mútua de Terrassa Terrassa Spain
3. Centre de Tecnologia Diagnòstica Hospital Universitari Mutua de Terrassa Terrassa Spain
4. Department of Epidemiology Rollins School of Public Health Emory University Atlanta Georgia USA
5. Institute of Experimental Immunology affiliated to EUROIMMUN Medizinische Labordiagnostika AG Luebeck Germany