From the Denver VA Medical Center (P.M.H., J.S.R.), Denver, Colo; University of Colorado Denver (P.M.H., J.S.R.), Denver, Color; Institute for Health Research (P.M.H., J.S.R.), Kaiser Permanente of Colorado, Aurora, Colo; Puget Sound VA Medical Center (C.L.B.), Seattle, Wash; and University of Washington (C.L.B.), Seattle, Wash. (At 2009-06-16)
