[1] Wake Forest Sch Med, Dept Neurol, One Med Ctr Blvd, Winston Salem, NC 27157 USA
[2] Univ N Carolina, Sch Nursing, Wilmington, NC USA
[3] Univ N Carolina, Dept Epidemiol, Gillings Sch Global Publ Hlth, Chapel Hill, NC 27515 USA
[4] Duke Univ, Sch Nursing, Durham, NC USA
[5] MedStar Natl Rehabil Network, Dept Rehabil Med, Washington, DC USA
[6] Georgetown Univ, Sch Med, Washington, DC USA
[7] Cornell Univ, Dept Rehabil Med, Weill Cornell Med Coll, New York, NY USA
[8] Columbia Univ, Dept Rehabil & Regenerat Med, Vagelos Coll Phys & Surg, New York, NY USA