Etiology of dementia included patients with Alzheimer’s disease (n=21) and Frontotemporal Dementia (n=23). Diagnosis of FTD was based on Neary et al. criteria21 while the diagnosis of probable AD was based on the National Institute of Neurological Disorders and Communicative Disorders and Stroke-Alzheimer´s Disease and Related Disorders Association (NINCDS-ADRDA) criteria.22