1. Department of Neurology (Dr. Cacho), University Hospital of Salamanca, University of Salamanca, Salamanca, Spain
2. Department of Neurology (Dr. Benito-León), University Hospital “12 de Octubre”, Madrid, Spain
3. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
4. Department of Basic Psychology and Psychobiology (Dr. García-García), University of Salamanca, Salamanca, Spain
5. Department of Psychology (Dr. Fernández-Calvo), Federal University of Paraíba, Brazil
6. Department of Statistics (Dr. Vicente-Villardón), University Hospital of Salamanca, University of Salamanca, Salamanca, Spain
7. Department of Liaison Psychiatry (Dr. Mitchell), Leicestershire Partnership Trust and University of Leicester, Leicester, UK