1. UPMC Centers for Rehab Services, Pittsburgh, Pennsylvania, USA
2. Department of Physical Therapy, Duquesne University, Pittsburgh, Pennsylvania, USA
3. Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
4. Department of Physical Medicine and Rehabilitation, University of Pittsburgh, 6425 Penn Ave, Suite 400, Pittsburgh, Pennsylvania, 15206, USA
5. Bioengineering, and Physical Therapy, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
6. Physical Therapy, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
7. Human Engineering Research Laboratories, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, USA