1. From the National Stroke Research Institute (J.L.S., K.K., B.R.C., A.L.A., G.A.D.) and Neurology Department (B.R.C., G.A.D.), Austin & Repatriation Medical Centre, Heidelberg; University of Melbourne, Parkville (J.L.S., B.R.C., A.L.A., G.A.D.); and Department of Neuroscience, John Hunter Hospital, Newcastle (C.R.L.), Australia.