1. From the Departments of Neurology (N.B., E.G., L.F., A.F., M.B., J.M.S., N.D.O., S.A.M.) and Neurosurgery (N.B., S.A.M.), Columbia University College of Physicians and Surgeons, New York, NY; and the Departments of Clinical Nutrition (E.S.) and Nursing (M.P.), New York Presbyterian Hospital, New York, NY.