[1] Neurosci & Spine Inst, Neurosci Rsch, Fairfax, VA USA
[2] Inova Fairfax Hosp, Fairfax, VA USA
[3] Inova Neurosci Inst, Fairfax, VA USA
[4] Texas Tech Univ, Neurol, El Paso, TX USA
[5] Oklahoma State Univ, Oklahoma City, OK USA
[6] Univ Missouri, Columbia, MO USA
[7] Univ Missouri, Zeenat Qureshi Stroke Inst, Columbia, MO USA
[8] Univ Missouri, Dept Neurol, Columbia, MO USA