1. Spinal Cord Injury Service and Disorders; Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA
2. Department of Physical Medicine and Rehabilitation; Virginia Commonwealth University, Richmond, VA, USA
3. National Center for the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center, Bronx, NY, USA
4. Icahn School of Medicine at Mt. Sinai, Medicine, New York City, NY, USA
5. Department of Physical Medicine and Rehabilitation, Penn State Milton S. Hershey Medical Center, Hershey, PA, USA