1 Division of Pediatric Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland. Electronic address: [email protected].
2 Section of Pediatric Neuroradiology, Division of Pediatric Radiology, Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, Maryland.
3 Division of Pediatric Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland; Division of Neurology and Developmental Medicine, Kennedy Krieger Institute, Baltimore, Maryland.