1. Department of Integrative Biology and Physiology, University of California, Los Angeles, California.
2. Veterans Affair Healthcare System Spinal Cord Injury and Disorders Center, Long Beach, California.
3. NeuroRecovery Technologies, Inc., San Juan Capistrano, California.
4. Pavlov Institute of Physiology, St. Petersburg, Russia.
5. Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.
6. Department of Neurobiology, University of California, Los Angeles, California.
7. Department of Neurosurgery, University of California, Los Angeles, California.
8. Brain Research Institute, University of California, Los Angeles, California.
9. Institut Guttmann. Hospital de Neurorehabilitació, Institut Universitari adscrit a la Universitat Autònoma de Barcelona, Barcelona, Spain.