[1] Univ Florida, Hlth Shands Hosp, NeuroIntens Care Unit, Gainesville, FL USA
[2] Univ Florida, Coll Med, Dept Neurol, Div Neurocrit Care, HSC POB 100236, Gainesville, FL 32610 USA
[3] Rush Univ, Med Ctr, Rush Med Coll, Chicago, IL 60612 USA
[4] Wayne State Univ, Henry Ford Hosp, Neurointens Care Unit, Neurosci Crit Care Serv, Detroit, MI USA