1. Human Engineering Research Laboratories, Department of Veterans Affairs Pittsburgh Healthcare System and University of Pittsburgh, Pittsburgh, PA
2. Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, PA
3. Toyota Mobility Foundation, Plano, TX
4. Department of Physical Therapy, University of Rhode Island, Kingston, RI
5. Physical Education and Physiotherapy Faculty, Federal University of Uberlandia, Uberlandia, Brazil
6. Department of Nutritional Science and Physiology, University of California, Berkeley, CA
7. Department of Physical Medicine and Rehabilitation, University of Pittsburgh, PA
8. Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA
9. University of Pittsburgh Medical Center, Pittsburgh, PA