1. Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), Institute for Nuclear Sciences Applied to Health (ICNAS), University of Coimbra , 3000-548 Coimbra , Portugal
2. Clinical Academic Centre of Coimbra (CACC), Faculty of Medicine (FMUC), University of Coimbra , 3000-548 Coimbra , Portugal
3. Department of Neurology, Coimbra University Hospital , 3000-076 Coimbra , Portugal