1. Department of Integrative Biology and Physiology, University of California, Los Angeles, California.
2. Department of Neurosurgery, Center for Neuroregeneration, Houston Methodist Research Institute, Houston, Texas.
3. Department of Biomedical Engineering, University of California, Los Angeles, California.
4. Brain and Spinal Injury Center, Department of Neurological Surgery, University of California, San Francisco, California.
5. Division of Engineering and Applied Sciences, California Institute of Technology, Pasadena, California.
6. Departments of Neurology and Neurobiology, University of California, Los Angeles, California.
7. Institut Guttmann, Hospital de Neurorehabilitació, Institut Universitari adscrit a la Universitat Autònoma de Barcelona, Barcelona, Badalona, Spain.
8. Departments of Neurobiology and Neurosurgery, University of California, Los Angeles, California.
9. Centre for Neuroscience and Regenerative Medicine, Faculty of Science, University of Technology Sydney, Sydney, New South Wales, Australia.
10. Pavlov Institute of Physiology, St. Petersburg, Russia.