By Sudhansu Chokroverty, MD, FRCP, FACP, Professor of Neurology, New York Medical College, Valhalla; Clinical Professor of Neurology, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, Piscataway, NJ; Associate Chairman of Neurology, Chairman of Neurophysiology, and Director, Center of Sleep Medicine, Saint Vincents Hospital and Medical Center, NY; Robert J. Thomas, MD, MMSc, Instructor in Medicine, Harvard Medical School; Department of Pulmonary, Critical Care and Sleep Medicine, Beth Israel Deaconess Medical Center, Boston, MA; and Meeta Bhatt, MD, PhD, Assistant Professor, Department of Neurology, New York University Medical Center; Director, New York Sleep Institute, New York, NY |