[1] Edward Hines Jr VA Hosp, Ctr Management Complex Chron Care, Hines, IL 60141 USA
[2] Univ Chicago, Coll Nursing, Chicago, IL 60637 USA
[3] Hunter Holmes McGuire VAMC, Richmond, VA USA
[4] Virginia Commonwealth Univ, Richmond, VA USA
[5] VA Palo Alto Hlth Care Syst, Spinal Cord Injury Ctr, Palo Alto, CA USA
[6] Stanford Univ, Palo Alto, CA 94304 USA
[7] Edward Hines Jr VA Hosp, Res & Dev Serv, Hines, IL 60141 USA