Affiliation: | 1. Regional Center for the Study of Headache and Cerebrovascular Disease Department of Neurology, San Bortolo Hospital, Vicenza, Italy;2. Center for Stroke Research, Department of Neurology, Detroit, MI, USA;1. Department of Internal Medicine, Lund University, University Hospital, 221 85 Lund, Sweden;1. Department of Neurology, Hospital Occidente de Kennedy and University La Sabana, Bogotá, Colombia;2. University Hospital Marqués de Valdecilla and IDIVAL, 39008 Santander, Spain |