1. From the Departments of Neurology (M.L., B.K.C.), Radiology (B.M.K.), Radiation Oncology (H.A.S.), and Pathology (A.M.S.), Massachusetts General Hospital, the Departments of Neurology (M.L., B.K.C.), Radiology (B.M.K.), Ophthalmology (M.K.Y.), Radiation Oncology (H.A.S.), and Pathology (A.M.S.), Harvard Medical School, and the Department of Ophthalmology, Massachusetts Eye and Ear (B.K.C., M.K.Y., A.M.S.) — all in Boston.