[1] Cleveland Clin Fdn, Cleveland, OH 44195 USA
[2] Innovat Neurotron, Austin, TX USA
[3] Kessler Fdn, Res Ctr, W Orange, NJ USA
[4] Rutgers New Jersey Med Sch, Newark, NJ USA
[5] San Francisco VA Med Ctr, San Francisco, CA USA
[6] VA North Texas Hlth Care Syst, Dallas, TX USA
[7] UT Southwestern Med Ctr, Dallas, TX USA
[8] Loma Linda Univ, Med Ctr, Loma Linda, CA USA
[9] Magee Mem Rehabilitat Ctr, Philadelphia, PA USA
[10] Madonna Rehabil Hosp, Lincoln, NE USA
[11] Med Univ S Carolina, Charleston, SC 29425 USA
[12] Florida Hosp, Neurosci & Orthoped Res Inst, Orlando, FL USA
[13] Halifax Hlth Ctr Neurosci, Daytona Beach, FL USA
[14] Helen Hayes Hosp, New York, NY USA
[15] South Shore Neurol Associates, Patchogue, NY USA
[16] Univ Minnesota Fairview, Minneapolis, MN USA
[17] Rehabil Inst Chicago, Chicago, IL 60611 USA
[18] Ralph H Johnson VA Med Ctr, Charleston, SC USA
[19] Oregon Hlth & Sci Univ, Portland, OR 97201 USA
[20] Univ Illinois, Chicago, IL USA
[21] Marshfield Clin Res Fdn, Marshfield, WI 54449 USA
[22] Ohio State Univ, Wexner Med Ctr, Columbus, OH 43210 USA
[23] Marianjoy Rehabil Hosp, Wheaton, IL USA
[24] Hartford Hosp, Hartford, CT 06115 USA
[25] Guilford Neurol Associates, Greensboro, NC USA
[26] SUNY Upstate Med Univ, Syracuse, NY 13210 USA
[27] West Los Angeles VA Med Ctr, Los Angeles, CA USA