1 Department of Physical Medicine and Rehabilitation, Vanderbilt University Medical Center, Nashville, TN; Department of Physical Medicine, Rehabilitation and Sports Medicine, University of Puerto Rico School of Medicine, San Juan, PR.
2 Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA; New England GRECC, VA Boston Healthcare System, Boston, MA.
3 Department of Rehabilitation Medicine, Clinical Center, National Institutes of Health, Bethesda, MD.
4 Department of Physical Medicine and Rehabilitation, Northwestern Feinberg Medical School and Rehabilitation Institute of Chicago, IL.
5 Departments of Neurology, Pediatrics, BME, ENT, Oregon Health & Science University, Portland, OR.
6 Health and Disability Research Institute, School of Public Health, Boston University, Boston, MA.
7 Department of Biomedical Engineering, Florida International University, Miami, FL.
8 Department of Physical Medicine and Rehabilitation, Indiana University School of Medicine and Rehabilitation Hospital of Indiana, Indianapolis, IN.
9 Program in Physical Therapy and Department of Radiology, Washington University School of Medicine, St. Louis, MO.
10 Division of Rehabilitation Sciences, School of Health Professions, University of Texas Medical Branch, Galveston, TX.
11 Methodist Rehabilitation Center, University of Mississippi Medical Center, Jackson Veteran's Administration Medical Center, Jackson, MS.
12 Department of Health Science and Research, College of Health Professions, Medical University of South Carolina, Charleston, SC.