Affiliation: | 1. Departments of Neurology and Anesthesiology, University of Alabama at Birmingham, RUWH M22, 619 19TH Street South, Birmingham, AL 35249-3280, USA;2. Departments of Critical Care Medicine, Neurology, & Neurosurgery, UPMC Healtcare System / University of Pittsburgh School of Medicine, 3550 Terrace Street, Scaife Hall Suite 600, Pittsburgh, PA, 15261, USA |