1. Rancho Research Institute, Rancho Los Amigos National Rehabilitation Center, Downey, California, USA.
2. USC Neurorestoration Center, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
3. Departments of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
4. Departments of Urology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
5. Elson S. Floyd College of Medicine, Spokane, Washington, USA.
6. Zanjan University of Medical Sciences, Zanjan, Iran.