1. Memory Unit; Department of Neurology; IIB Sant Pau; Hospital de la Santa Creu i Sant Pau; Barcelona Spain
2. Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED); Instituto de Salud Carlos III; Madrid Spain
3. Movement Disorders Unit; Department of Neurology; IIB Sant Pau; Hospital de la Santa Creu i Sant Pau; Barcelona Spain
4. Memory and Movement Disorders Units; Department of Neurology; University Hospital Mútua de Terrassa; Barcelona Spain