1. From the Department of Neurology (G.Y.-H.H., C.-R.W., S.-L.T.), Singapore General Hospital; Department of Medicine (J.W.E.), McMaster University, Hamilton, Canada; Stroke Unit (G.J.H.), Royal Perth Hospital, Australia; and Department of Neurology (J.B.-C.C., C.P.L.-H.), National Neuroscience Institute, Singapore General Hospital Campus.