1. Discovery Center for Musculoskeletal Recovery, Schoen Adams Research Institute at Spaulding, Charlestown, Massachusetts 02129, United States
2. Department of Physical Medicine & Rehabilitation, Harvard Medical School, Boston, Massachusetts 02115, United States
3. Department of Physical Medicine & Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, Massachusetts 02129, United States
4. Department of Physical Medicine & Rehabilitation, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
5. Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
6. Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
7. Department of Biomedical Engineering, University of North Texas, Denton, Texas 76207, United States
8. IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan 20148, Italy
9. Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
10. Department of Computational Biology, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
11. Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
12. Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States