1. Spaulding Rehabilitation Hospital, Boston, Massachusetts, USA
2. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, Massachusetts, USA
3. Spaulding Research Institute, Boston, Massachusetts, USA
4. Division of Physical Medicine and Rehabilitation, University of Utah School of Medicine, Salt Lake City, Utah, USA
5. Veterans Affairs Salt Lake City Healthcare System, Salt Lake City, Utah, USA
6. Kessler Institute for Rehabilitation, West Orange, New Jersey, USA
7. Department of Physical Medicine and Rehabilitation, Rutgers New Jersey Medical School, Newark, New Jersey, USA
8. Department of Surgery, Division of Urology, Rutgers New Jersey Medical School, Newark, New Jersey, USA