Valeria Caso1,2,3, Diana Aguiar de Sousa4,5,6, Urs Fischer4,5,6. 1. Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia, Italy. vcaso@hotmail.com. 2. Department of Neurology, Hospital de Santa Maria, University of Lisbon, Lisbon, Portugal. vcaso@hotmail.com. 3. Department of Neurology, University Hospital Bern, Inselspital, University of Bern, Bern, Switzerland. vcaso@hotmail.com. 4. Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia, Italy. 5. Department of Neurology, Hospital de Santa Maria, University of Lisbon, Lisbon, Portugal. 6. Department of Neurology, University Hospital Bern, Inselspital, University of Bern, Bern, Switzerland.