1 From the Department of Neurology (W.O.T.), Mayo Clinic, Jacksonville, FL; and Department of Pediatrics (R.A.S.), University of Michigan, Ann Arbor, MI. Tatum.William@mayo.edu.
2 From the Department of Neurology (W.O.T.), Mayo Clinic, Jacksonville, FL; and Department of Pediatrics (R.A.S.), University of Michigan, Ann Arbor, MI.