1. Department of Urology, Keck School of Medicine, University of Southern California, Los Angeles, California
2. Rancho Los Amigos National Rehabilitation Center, Downey, California
3. USC Neurorestoration Center, Los Angeles, California
4. Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California
5. SpineX Inc, Los Angeles, California
6. Department of Integrative Physiology, University of California Los Angeles, Los Angeles, California
7. Mark and Mary Stevens Neuroimaging and Informatics Institute, University of Southern California, Los Angeles, California