Merritt's neurology / Elan D. Louis, MD, MS, Professor of Neurology Linda and Mitch Hart Distinguished Chair in Neurology Chairman, Department of Neurology University of Texas Southwestern Medical Center, Dallas, Texas, Stephan A. Mayer, MD, FCCM, FNCS, Director of Neurocritical Care and Emergency Neurological Services, Westchester Medical Center Health Network Professor of Network, Professor of Neurology and Neurosurgery, New York Medical College, Valhalla, New York, James M. Noble, MD, MS, CPH, FAAN, Associate Professor of Neurology at CUIMC Taub Institute for Research on Alzheimer's Disease and the Aging Brain, G.H. Sergievsky Center, Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, New York.