1. Neurology Department, Coimbra Hospital and University Centre, Coimbra, Portugal
2. Centre for Sleep Medicine, Coimbra Hospital and University Centre, Coimbra, Portugal
3. Laboratory for the Study of Language, Faculty of Medicine, University of Lisboa, Lisboa, Portugal
4. Otorhinolaryngology Department, Cascais Hospital, Cascais, Portugal
5. Faculty of Medicine, Coimbra University, Coimbra, Portugal