[1] Natl Stroke Res Inst, Heidelberg Hts, Australia
[2] La Trobe Univ, Melbourne, Vic, Australia
[3] St Olavs Univ Hosp, Trondheim, Norway
[4] Norwegian Univ Sci & Technol, Dept Neurosci, Fac Med, N-7034 Trondheim, Norway
[5] Baker Heart Res Inst, Melbourne, Vic, Australia
[6] Case Western Reserve Univ, Sch Med, Dept Med, Cleveland, OH 44106 USA