1. From the Royal Melbourne Hospital (D.A.D.S., S.C., M.E., S.M.D.), Victoria, Australia; Christchurch School of Medicine and Health Sciences (J.N.F.), New Zealand; Eastern Melbourne Neurosciences (C.B.), Australia; John Hunter Hospital (C.R.L., M.P.), Australia; University of Alberta (K.B.), Canada; Auckland City Hospital (P.A.B.), New Zealand; National Stroke Research Institute (G.A.D.), Melbourne, Australia; and University of Melbourne (G.A.D., S.M.D.), Australia.