1. From the Department of Pediatrics, Boston University Medical Center (E.M.C.), the Departments of Ophthalmology (L.S., A.M.S.), Radiology (M.G.F.L.), Neurology (D.B.P.), Pediatrics (D.R.B.), and Pathology (A.M.S.), Massachusetts General Hospital, and the Departments of Ophthalmology (L.S., A.M.S.), Radiology (M.G.F.L.), Neurology (D.B.P.), Pediatrics (D.R.B.), and Pathology (A.M.S.), Harvard Medical School — all in Boston.