1. VA RR&D National Center for the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center, Bronx, New York, USA.
2. College of Medicine, SUNY Downstate Health Sciences University, Brooklyn, New York, USA.
3. New York Institute of Technology, Department of Physical Therapy, Old Westbury, New York, USA.
4. Medical Service, James J. Peters VA Medical Center, Bronx, New York, USA.
5. Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York.
6. Department of Rehabilitation Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York.