1. Department of Neurology; Emory University School of Medicine; Atlanta Georgia U.S.A
2. Department of Pediatrics; Emory University School of Medicine; Atlanta Georgia U.S.A
3. Department of Neurology; University of Washington School of Medicine; Seattle Washington U.S.A
4. Nuffield Department of Clinical Neurosciences; FMRIB Centre; University of Oxford; Oxford United Kingdom
5. Department of Neurological Surgery; University of Washington School of Medicine; Seattle Washington U.S.A
6. Department of Neurosurgery; Emory University School of Medicine; Atlanta Georgia U.S.A
7. Department of Radiology; Emory University School of Medicine; Atlanta Georgia U.S.A
8. Department of Physical Medicine & Rehabilitation; Wayne State University School of Medicine; Detroit Michigan U.S.A