1. From the Division of Biokinesiology and Physical Therapy (J.K.T., S.Y.C.), University of Southern California, Los Angeles, CA; Department of Biostatistics (S.S.W.), University of Florida, Gainesville, FL; Department of Biostatistics (Q.F.), Department of Sociology, National University of Singapore, Singapore; Department of Physical Therapy (D.R.R., A.L.B.), University of Florida, Gainesville, FL; Malcom Randall VA Medical Center (D.R.R.), Gainesville, FL; Department of Preventive Medicine (S.P.A.),...