1. Department of Biomedical Engineering, University of California, Los Angeles, California.
2. Department of Integrative Biology and Physiology, University of California, Los Angeles, California.
3. Department of Mechanical Engineering, University of Alberta, Donadeo Innovation Centre for Engineering, Edmonton, Alberta, Canada.
4. Glenrose Rehabilitation Hospital, Alberta Health Services, Edmonton, Alberta, Canada.
5. Division of Engineering and Applied Sciences, California Institute of Technology, Pasadena, California.
6. Department of Neurobiology and Neurosurgery, 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. Centre for Neuroscience and Regenerative Medicine, Faculty of Science, University of Technology, Sydney, Australia.
9. Pavlov Institute of Physiology, St. Petersburg, Russia.
10. Department of Neurosurgery, Center for Neuroregeneration, Houston Methodist Research Institute, Houston, Texas.