editor, John E. Arbo, MD, Assistant Professor of Emergency Medicine and Critical Care Medicine, New York-Presbyterian Hospital/Weill Cronell Medical Center, New York, New York ; associate editors, Stephen J. Ruoss, MD, Professor of Pulmonary and Critical Care Medicine, Stanford University Medical Center, Stanford, California, Geoffrey K. Lighthall, MD, Associate Professor of Anesthesia and Crtical Care Medicine, Stanford University Medical Center, Stanford, California, Michael P. Jones, MD, Assistant Professor of Emergency Medicine, Associate Program Director-Jacobi/Montefiore Emergency Medicine Residency Program, Albert Einstein College of Medicine, New York, New York ; special editor: neurology section : Joshua Stillman, MD, MPH, Assistant Professor of Medicine, Emergency Medicine Director of the Stroke Center at New York-Presbyterian Hospital/Columbia University Medical Center, New York, New York