1. From the Neurosonology and Stroke Research Program (T.G., V.K.S., A.Y.L., M.D.M., A.V.A.), Barrow Neurological Institute, Phoenix, Ariz; the Department of Neurology (G.T.), University of Athens School of Medicine, Athens, Greece; the Department of Medicine (V.K.S.), Division of Neurology, National University Hospital, Singapore; and the University of Santo Tomas (A.Y.L.), Manila, Philippines.