[1] Western Univ, Stroke Dementia & Heart Dis Lab, London, ON, Canada
[2] Western Univ, Dept Clin Neurol Sci, Schulich Sch Med & Dent, London, ON, Canada
[3] Western Univ, Dept Anat & Cell Biol, London, ON, Canada
[4] Western Univ, Dept Epidemiol & Biostat, London, ON, Canada
[5] Western Univ, Robarts Res Inst, London, ON, Canada
[6] Univ Minnesota, Sch Med, Dept Med, Div Cardiovasc, Minneapolis, MN 55455 USA