[1] Edward Hines Jr VA Hosp, Spinal Cord Injury Qual Enhancement Res Initiat S, Dept Vet Affairs VA, Hines, IL USA
[2] Edward Hines Jr VA Hosp, Ctr Innovat Complex Chron Healthcare, Hines, IL USA
[3] Northwestern Univ, Feinberg Sch Med, Ctr Healthcare Studies, Inst Publ Hlth & Med Gen Internal Med & Geriatr, Chicago, IL 60611 USA
[4] Rehabil Inst Chicago, Ctr Rehabil Outcomes Res, Chicago, IL 60611 USA
[5] Northwestern Univ, Dept Phys Med & Rehabil, Feinberg Sch Med, Chicago, IL 60611 USA
[6] Rehabil Inst Chicago, Chicago, IL 60611 USA