1. From the Stroke Unit, Department of Neurology, (S.C.O.M., G.W., A.G.A., R.B., L.A.C., A.C.d.S., M.C.O.M., C.B.), Hospital de Clínicas de Porto Alegre, Brazil
2. Post Graduation in Stroke Neurology, Department of Neurology and Neurosurgery, Hospital Moinhos de Vento, Porto Alegre, Brazil (S.C.O.M., G.W., A.G.A., L.A.C., A.C.d.S., F.M.G., L.M.V.)
3. Department of Neurology and Neurosurgery, Hospital Moinhos de Vento, Porto Alegre, Brazil (S.C.O.M., G.W., A.G.A., L.A.C., A.C.d.S., M.C.O.M., C.B.)
4. Department of Internal Medicine, Jackson Memorial Hospital, Miami, FL (G.N.)
5. Department of Internal Medicine, Hospital Moinhos de Vento, Porto Alegre, Brazil (L.A.N.)
6. Department of Radiology (F.B.S., M.A.B.C.R.), Hospital de Clínicas de Porto Alegre, Brazil
7. Department of Pathology and Imaging, DASA, São Paulo, Brazil (L.M.V.)
8. Department of Neurology, Marcus Stroke and Neuroscience Center, Grady Memorial Hospital, Emory University, Atlanta, GA (R.G.N.).