[1] Duke University,Division of Doctor of Physical Therapy, Department of Community and Family Medicine
[2] Duke University,Center for Clinical Health Policy Research
[3] Duke University,Center for Aging
[4] University of Southern California,Department of Biokinesiology and Physical Therapy
[5] University of Florida,Department of Physical Therapy, Brooks Center for Rehabilitation Studies
[6] Department of Veteran Affairs Brain Rehabilitation Research Center,Biostatistics Division, Department of Preventive Medicine
[7] University of Southern California,Department of Epidemiology and Health Policy Research
[8] University of Florida,Geriatric Research, Education and Clinical Center
[9] Malcom Randall VA Medical Center,Department of Neurology
[10] University of California,Department of Aging and Geriatric Research
[11] University of Florida,undefined