1. Department of Physical Medicine and Rehabilitation, Vanderbilt University Medical Center, Nashville, Tennessee, USA
2. Department of Physical Medicine, Rehabilitation, and Sports Medicine, University of Puerto Rico School of Medicine, San Juan, Puerto Rico
3. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, Massachusetts, USA
4. New England GRECC, VA Boston Healthcare System, Boston, Massachusetts, USA
5. Department of Rehabilitation Medicine, Clinical Center, National Institutes of Health, Bethesda, Maryland, USA
6. Department of Physical Medicine and Rehabilitation, Northwestern Feinberg Medical School and Rehabilitation Institute of Chicago, Illinois, USA
7. Departments of Neurology, Pediatrics, BME, ENT, Oregon Health & Science University, Portland, Oregon, USA
8. Health and Disability Research Institute, School of Public Health, Boston University, Boston, Massachusetts, USA
9. Department of Biomedical Engineering, Florida International University, Miami, Florida, USA
10. Department of Physical Medicine and Rehabilitation, Indiana University School of Medicine and Rehabilitation Hospital of Indiana, Indianapolis, Indiana, USA
11. Program in Physical Therapy and Department of Radiology, Washington University School of Medicine, St. Louis, Missouri, USA
12. Division of Rehabilitation Sciences, School of Health Professions, University of Texas Medical Branch, Galveston, Texas, USA
13. Methodist Rehabilitation Center, University of Mississippi Medical Center, Jackson Veteran’s Administration Medical Center, Jackson, Mississippi, USA
14. Department of Health Science and Research, College of Health Professions, Medical University of South Carolina, Charleston, South Carolina, USA