Mount Sinai expert guides. / edited by Stuart Sealfon, MD, Glickenhaus Professor and Chairman Emeritus, Department of Neurology Professor of Neurobiology, Pharmacology and Systems Therapeutics Director, Center for Advanced Research on Diagnostic Assays, Icahn School of Medicine at Mount Sinai, New York, NY, USA, Rajeev Motiwala, MD, Associate Professor of Neurology Director, Neurology Clerkship Icahn School of Medicine at Mount Sinai, New York, NY, USA, Charles B. Stacy, MD, Assistant Professor of Neurology Director of General Neurology Icahn School of Medicine at Mount Sinai, New York, NY, USA.