[1] Univ Massachusetts, Sch Med, Dept Cell Biol, Worcester, MA 01655 USA
[2] Univ Massachusetts, Sch Med, Dept Neurol, Worcester, MA 01655 USA
[3] Univ Massachusetts, Sch Med, Div Res & Evaluat, Worcester, MA 01655 USA
[4] Amer Stroke Assoc, Dallas, TX USA
[5] Meyers Primary Care Inst, Worcester, MA 01655 USA
[6] Fallon Healthcare Syst, Worcester, MA 01655 USA