1 From the Division of Pediatric Neurology (K.C.E.), Vanderbilt University Medical Center, Nashville, TN; and Division of Pediatric Neurology (H.T.C.), PET Center Children's Hospital of Michigan, Detroit. [email protected].
2 From the Division of Pediatric Neurology (K.C.E.), Vanderbilt University Medical Center, Nashville, TN; and Division of Pediatric Neurology (H.T.C.), PET Center Children's Hospital of Michigan, Detroit.