1. From the Departments of Neurology (D.C.B., M.J.R.), Cardiology (D.W., D.R.D., C.D.M., G.W., J.W.N.), Psychiatry (M.J.R., D.R.D.), Radiology (M.J.R., R.L.R.), Pediatrics (L.A.R.), and Cardiac Surgery (R.A.J.), Children's Hospital Boston; Departments of Neurology (D.C.B., M.J.R.), Pediatrics (D.W., D.R.D., L.A.R., G.W., J.W.N.), Radiology (R.L.R.), Psychiatry (D.R.D.), and Cardiac Surgery (R.A.J.), Harvard Medical School; and Department of Biostatistics, Harvard School of Public Health (D.W.), Boston,...