1. Department of Neurology, Division of Child Neurology, Lucile Packard Children's Hospital at Stanford University, Palo Alto, California (S.P.1, C.D., S.P.2, P.G.F.); Division of Child Neurology, CHU Sainte-Justine, Montreal, Quebec, Canada (S.P.1); Department of Neurosurgery, Stanford University, Palo Alto, California (R.M.L., P.G.F.); Lane Medical Library, Stanford University, Palo Alto, Californ