1. From the Stroke Unit, Department of Neurology (M. Ribo, M. Rubiera, A.F., P.C., J.P., D.R.-L., S.B., M.M., C.A.M.) and Neuroradiology, Department of Radiology (A.T., M.L., C.V., A.R.), Hospital Vall d’Hebron, Universitat Autonoma de Barcelona, Barcelona, Spain.