1. From the Veterans Affairs Medical Center, Washington, DC (R.E.K., R.D.F., S.S., M.R.B., A.A.); Department of Medicine, George Washington University, Washington, DC (R.E.K., M.R.B.); Department of Medicine, Georgetown University, Washington, DC (R.D.F., S.S., M.R.B., A.A.); School of Nursing (M.A.B.) and Departments of Medicine (M.A.B., D.B., M.B.A., R.O.T., C.J.B., A.A.), Biostatistics (C.J.M.), and Epidemiology (J.M.R.), University of Alabama at Birmingham; Department of Medicine, University of...