1. Department of Neurology, Emory University School of Medicine, Atlanta, Georgia, USA
2. Department of Neurosurgery, Emory University School of Medicine, Atlanta, Georgia, USA
3. Neuralstem, Inc., Rockville, Maryland, USA
4. Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
5. Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA