1. From the Neurology Department, Hospital de Clínicas, U.N.A. San Lorenzo, Paraguay (A.F.); Stroke Unit (M. Rubiera, M. Ribó, J.P., D.R.-L., M.M., S.B., L.S., E.S., P.M., E.S., C.A.M.) and Neuroradiology Department (M.R., M.R., J.P., D.R.-L., M.M., S.B., L.S., E.S., P.M., E.S., A.T., M.L., P.C., C.A.M.), Vall D’ Hebron Hospital, Barcelona, Spain; and Neurology Department, Clínica Alemana, Santiago, Chile (D.C.).