1. From the Stroke Unit, Department of Neurology (J.P., A.F., M.M., D.R.-L., L.S., M. Rubiera, S.B., M. Ribó, J.A.-S., C.A.M.) and Echocardiography Unit, Department of Cardiology (T.G.-A., A.E.), Vall d´Hebrón Hospital Research Institute, Universitat Autònoma Barcelona, Barcelona, Spain.