[1] Northwestern Univ, Feinberg Sch Med, Dept Neurol, 303 East Chicago Ave, Chicago, IL 60611 USA
[2] Northwestern Univ, Dept Phys Med & Rehabilitat, Feinberg Sch Med, Chicago, IL 60611 USA
[3] Northwestern Univ, Shirley Ryan AbilityLab, Dept Neurol, Feinberg Sch Med, Chicago, IL 60611 USA
[4] Northwestern Univ, Div Pulm & Crit Care Med, Feinberg Sch Med, Chicago, IL 60611 USA