1. From the Departments of Psychiatry (G.L.F., Z.C., M.D.K.), Radiology (A.B.P.), and Neurology (Z.C.), Massachusetts General Hospital, and the Departments of Psychiatry (G.L.F., Z.C., M.D.K.), Radiology (A.B.P.), and Neurology (Z.C.), Harvard Medical School — both in Boston.