[1] Ctr Innovat Complex Chron Healthcare CINCCH, Hlth Serv Res & Dev Serv, Dept Vet Affairs, Hines, IL USA
[2] Northwestern Univ, Feinberg Sch Med, Dept Phys Med & Rehabil, Chicago, IL USA
[3] VA Boston Healthcare Syst, Dept Spinal Cord Injury, West Roxbury, MA USA
[4] Harvard Med Sch, Spaulding Rehabil Hosp, Boston, MA 02115 USA
[5] Satakunta Univ Appl Sci, Fac Hlth & Welf, Dept Physiotherapy & Rehabil, Pori, Finland
[6] Augusta Univ, Dept Orthopaed, Med Coll Georgia, Augusta, GA USA
[7] Charlie Norwood Vet Adm Med Ctr, Augusta, GA USA
[8] Augusta Univ, Dept Med, Div Rheumatol, Med Coll Georgia, Augusta, GA USA
[9] Loyola Univ, Parkinson Sch Hlth Sci & Publ Hlth, Publ Hlth Sci, Maywood, IL 60153 USA