1. Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, and
2. Department of Neurology, Yale University School of Medicine, New Haven, Connecticut; and
3. Center for Neuroscience and Regeneration Research, VA Connecticut Healthcare System, West Haven, Connecticut
4. Department of Neurosurgery, Sapporo Medical University School of Medicine, Sapporo, Hokkaido;
5. NIPRO Life Science Site, NIPRO Corporation, Kusatsu, Shiga, Japan;